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Question by willycox
Submitted on 11/6/2003
Related FAQ: Gasoline FAQ - Part 4 of 4
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what is the function of the egr valve? Can it be repaired or does it need to be replaced?

Answer by Ryan Goat
Submitted on 11/19/2003
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The EGR stands for Exhaust Gas Recirculation.  Exhaust gas is routed back into the combustion chamber because the exhausted air is much hotter than the intake air (try touching a muffler sometime).  By sending warmer gas into the combustion chamber, the air/fuel mix does not have to do as much work to heat up, and your engine runs more efficiently.  

  As far as fixing it yourself, it's an electronic part.  I'd say you're better off having a mechanic or experienced friend do it for you.


Answer by Tom L
Submitted on 12/20/2003
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EGR Theory.  EGR serves one purpose and one purpose only.  That purpose is to reduce Oxides of Nitrogen (NOx).  Undernormal combustion, Nitrogen(N2)Oxygen (O2) in the air and Hydrocarbons (HC) in the fuel combind into water(H2O) Carbon dioxide (CO2) and the Nitrogen remains unchanged.  Under very hot combustion temperatures, the Nitrogen reacts with the other two byproducts and forms Nitrogen oxide (NO).  After being released into the atmosphere, it picks up another Oxygen and becomes Nitrogen dioxide (NO2).  In the presence of sunlight,
it combines with other compounds like Hydrocarbons and forms Smog.  Since exhaust gas is inert (very stable) it doesnít burn again.  So by being introduced into
the combustion chamber, it will lower combustion chamber temps enough so that
the Nitrogen doesnít react with the other compounds and is passed unchanged out
the tailpipe thus not contributing to smog.  Now, since exhaust gas doesnít burn, it
doesnít exactly help with combustion.  At higher RPMís, this really isnít noticable,
but at idle, the reintroduction of exhaust gas will cause a very rough idle and can
cause stalling if to much is introduced into the combustion chamber


Answer by Bob
Submitted on 3/27/2004
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I currently have a 2000 sl and just recently my Service Engine Light came on. I was advised the code was P1404 when I had it checked. Doing a cross-reference of the code it indicated something to do withe an EGR Valve. What basically is the function of this valve and by ignoring the indicator can I do damage to my car?


Answer by Lisa
Submitted on 5/7/2004
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I have a 2000 sl too and my SES light keeps coming on and I only have 13,000 miles on it and I took it to the dealership and they told me they have to replace the fuel tank, is that associated with the EGR valve?  The expense is almost $500, I too, want to know what damage can it do to my car if I don't repair quickly?


Answer by MIchael
Submitted on 5/8/2004
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I have a 97 Ford Taurus. The service engine light keeps on and indicates EGR valve related. In the mean time, I feel shaking when the car runs between 45-55 miles. Does the shaking has anything to do with EGR valve? I just did wheel balance and the car is 90K mile.  Thanks  


Answer by Bubba
Submitted on 5/10/2004
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I have 94 Chevy Blazer, with the 4.3 liter Vortec. One day I was coming off the highway and had to press on the brakes with alot of force, then the SES light came on and it idled roughly. I took it to a mechanic and they fixed but recently it happened again, it did at about 55 MPH but it does not have a rough idle any more but the light is still on. I am 16 and I do not have a lot of money is there an easy fix(CHEAP!!!!!!!).


Answer by Brandon
Submitted on 5/24/2004
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It is possibly to "Clean" an EGR valve.
Since is simply pulls exhaust gasses from your exhaust and introduces them back into your engine's intake air it only makes sense that eventually it will become clogged or stuck open/closed from the carbon deposits.
It you remove the EGR from the vehicle you can either just spray it out or let it soak in a shallow bath of carburetor cleaner.  DO NOT soak the electronic piece if yours is electronically controlled.  This cleaning should fix it up for a while.  It's a lot cheaper for a $1.99 can of cleaner than it is for any EGR valve.


Answer by DirtyTbird
Submitted on 5/25/2004
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People, people, people, stop worrying.  I drive a 92 ford tbird, and it runs great the only problem is that the check engine light comes on randomly.  When that happens chances are its a egr problem or an 02 problem.  Leaving your EGR (if it is what is the problem) wont do anything and is absolutely NO threat to your vehicle at all.  Just good luck with an emissions test here in Ontario.  They cost around 100 bucks Canadian (installed) thats what ford will quote.  The only thing is the random check engine light which is annoying.  If you are really bothered by it go to walmart, and rent (buy it then return it right after) a code checker, for your make of vehicle.  It will confirm that it is an egr problem or whatever the problem may be.  Either way if its egr its not worth the money having it repaired, try cleaning it as the process is described above.  


Answer by Cute
Submitted on 5/30/2004
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I'm doing research on Emission from Natural Gas Engine where I use Flow Reversal method in the catalytic convertor to increase the temperature inorder to oxidize methane.. My circuit requires 4 valves and all the valves have to withstand the temperatureof around 600 C.  I've been trying to get from the market but really find it difficult to get one. Can anyone of you suggest please?
Thanking you


Answer by Carnuck
Submitted on 6/1/2004
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Check with outfits that do Natural Gas servicing. The stainless steel or Stellite valves should work for your application. I ran mine with the exhaust glowing cherry red no problem (paper ignited when it touched the pipe, so I made a doubled aluminum heat shield with fan driven cooling)


Answer by Mark
Submitted on 6/4/2004
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Hey, if anybody gets this, i own an 88 chevy spectrum.  I was thinking about getting a new EGR valve, however i will try the cleaning on it first.  As of right now, the car is blowing a little black smoke, which makes me wonder if it would be the EGR valve.  I know i need an exhaust manifold gasket, because it has a leak.  any suggestions?  stflatliner@hotmail.com


Answer by memyselfandi
Submitted on 6/13/2004
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hey i have a 90 olds cutlass supreme with the 3.1 v6.  it has been acting up on several different occasions. it doesn't do it all the time but will mainly when i first start it up. it idles fine but when i press the gas it wants to stall or quit.  it will do this in park or any gear.  it kinda smells out the tail pipe too.  i was told it could be the map sensor or the egr valve.  i replaced the map sensor but with no resolve.  then somebody told me to clean the egr valve out.  i removed it & there is like 3 parts to it.   i cleaned all the black carbon & crap off these parts & put it back together.  it seems to run good now, but still kinda smelly.  i might pick up one at the junk yard.  any ideas??  memyselfandi988@hotmail.com


Answer by Tim e
Submitted on 6/28/2004
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I have a '95 tercel-the engine light came on the other day and I freaked so I payed the $80 for the diagnostics and was told it was the egr valve-in the meantime, the engine light went out on its own. Should I still replace the valve?What will it hurt if I don't?


Answer by Duston
Submitted on 6/30/2004
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I own a 94 Chevy Blazer 4.3 V6, and I've taken it across the country with the EGR going out on me only twice.  Now it goes out anytime I take it out of town, or even in town.  I've gotten to the point where I can pull it off myself, remove the tiny chip of carbon and put it back on.  I've talked to mechanics and I've had the engine blown out to hopefully clear the carbon but it's really pointless, the problem remains.  So in the end it's not the EGR valve that is the problem you could throw it against a brick wall and it wont break or damage your engine, it's the carbon that gets lodged in it.  At least thats the story in the 4.3 Vortec V6. It's a common problem in them and I think it's a ridiculous flaw that was overlooked by the manufacturer


Answer by jerry
Submitted on 7/5/2004
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I have a 2000 Isuzu Trooper with 40,000 miles on it. My check engin light came on last night. I took it to Autozone for there free computer check(there great for doing this). During the check, the clerk said my problem was the EGR valve. He carries them all day long for $99.00. I took it to Isuzu and was told there price was $190.00 , and they would need to do a upper engin cleaning also( $200.00). Is this necessary?


Answer by DB
Submitted on 7/8/2004
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How EGR systems work The EGR valve recirculates exhaust into the intake stream. Exhaust gases have already combusted, so they do not burn again when they are recirculated. These gases displace some of the normal intake charge. This chemically slows and cools the combustion process by several hundred degrees, thus reducing NOx formation.

The design challenge The EGR system of today must precisely control the flow of recirculated exhaust. Too much flow will retard engine performance and cause a hesitation on acceleration. Too little flow will increase NOx and cause engine ping. A well-designed system will actually increase engine performance and economy. Why? As the combustion chamber temperature is reduced, engine detonation potential is also reduced. This factor enabled the software engineers to write a more aggressive timing advance curve into the spark timing program. If the EGR valve is not flowing, onboard diagnostics (OBD) systems will set a code and the power control module (PCM) will use a backup timing curve that has less advance to prevent engine ping. Less timing advance means less performance and economy. Do your customer a favor and fix those EGR codes that you may have previously deemed as unimportant.


Answer by Nate
Submitted on 7/9/2004
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I am looking at purchasing a 1992 Oldsmobile Cutlass Supreme w/ 3.1 V6. The lady who owns it said the only known problem was the EGR valve. Checked it at Schucks and the part itself is $325. Is it something that has to be done or does cleaning it really help. Not sure I want to buy the car if I have to purchase a $300 part right off the bat.


Answer by Dave
Submitted on 7/10/2004
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My 96 Lumina'sSES light keeps coming on.  It's the EGR valve.  I've cast about on the Internet, and it seems that it can cause maybe three real problems.  1.  Smog--your car puts out more pollution.  That is a given.  If your EGR valve is faulty its almost certainly doing this.   2.  It could cause some skipping on accelration or problems with idling as noted here, but probably not.  3.  It is more likely that you could develop an engine knock from the air/fuel mixture becoming to hot "ping" or "detonation".  

If you want to drop $400-500 bucks to fix the amount of pollution your car puts out that's fine...a little weird, but fine.  My EGR has been out for three months and I haven't experienced problems 2 or 3.  However, I would say that 2 would be annoying, and 3 after a while would become dangerous to your engine.  

My advice is that if your budget is tight, wait.  IT seems you could potentially drive a long while without ever developing any real problems.  

Hope this helps some.  


Answer by Erci
Submitted on 7/10/2004
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I just went to AutoZone after finding my car idling rough and stalling when putting it into gear.

It was the EGR valve and it was getting NO air flow so I bought a new one for 40$!!

I donít know why all of yours cost so much but I have a 1995 Thunderbird LX, maybe because yours are all more digitally controlled or something of that nature.




Answer by kris
Submitted on 7/15/2004
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my mom is having trouble getting her 86 maxima to pass smog. the smog report came back and it said the EGR valve was faulty. so we went and found a new one for 80 bucks put it in took it in to have it smogged and its still "faulty" well i tested it out and everything and its getting lift so if it gets lift it gets vacuum right? what else could be the problem with it?


Answer by Shaka
Submitted on 7/21/2004
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It does work.  I have a 99 Pontiac, and my Service Engine Soon light came on, I got the code P1404, and I cleaned the EGR valve with carbon cleaner, and it is all good now.  Don't go to a dealer, THEY WILL SOAK YOU LIKE A MUDDY DOG!


Answer by whitevette
Submitted on 8/3/2004
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Regarding P1404, PCV valves, "stealer" rip-offs, & lots of slightly misguided intentions : The Positive Crankcase Ventilation valve is a simple slide valve, designed to pass hot(exhaust) gasses in one direction only... from the crankcase(oil pan) to the intake manifold(lower pressure). It is subject to gumming up/clogging ... and any good carb/brake cleaner(spray can) will rinse & "free up" this valve(watch your eyes!) ; just shake it! A clean one will rattle!
   Regarding the "check engine light" coming on, or flickering...this is a fouled/burned oxygen sensor! Clean it the same way , but don't be disappointed in finding a burned unit! It measures the temp. of the exhaust gasses(oxygen content);it has nothing to do with the EGR valve!!


Answer by Donta
Submitted on 8/7/2004
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I have a 95 Toyota Tercel and I had just got my converter fixed when the engine light came back on, so I went to Autozone where they did a free engine check and it said that my EGR valve needs to be changed.  I think the best thing to do is take it off and try to clean it first since it is such an expensive little part, and see if that helps it first then go to the only other option.


Answer by TheTruth
Submitted on 8/10/2004
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I just recently soaked my EGR valve in degreaser. It worked great. Just make sure you clean around the port where the pin from the diaphragm rest. I cleaned and spray my EGR valve for about two hours. Just make sure your remove the harden carbon deposits around the walls. Thanks for everyone's help.


Answer by alex
Submitted on 8/18/2004
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I have 95 Dodge Grand Caravan SE, And my Check Engine light came out. And my van start loosing power and acceleration.I tryed to clean it but, it will not help much. So I check the code and it showed that my EGR Valve doesn't work properly. So I went to Checker Auto store and I got that EGR valve for $60.00 dollars. After I replaced it my van start accelarating better, and the power returned back. But my Engine sometimes vibrates not normaly when I put in gear. If any body has answer for this, please email me losha64@hotmail.com Thank You!


Answer by Nobody
Submitted on 8/23/2004
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they have the taurus sel one for 38 dollars - stop being dumb and search the web for lower prices...


Answer by vinwiesel
Submitted on 8/25/2004
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I had the EGR problem years ago in a Oldsmobile cutlass Calais, my wife's car.

Fortunately I knew an HONEST mechanic.

He got in the car with me to see what the car was doing (rough idle, stalls, low power) and after observing the problem he made me pull over then he popped the hood pulled the hose from the EGR and plugged it with a large screw...VIOLA! The car ran perfect! The charge for this? A whopping $10.00 for his time...what a guy!

His advice was this:  Drive your car like it is it wont hurt anything AS LONG AS the engine doesn't start "labor knocking". If later on it starts to do this then you will need to get a new valve, otherwise you don't need it. As long as we owned it it never needed the valve and ran great. Hope this helps somebody...vin


Answer by Gil
Submitted on 8/29/2004
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I have a Chevy Cavalier 2.2 1999. Didn't pass the smog check because of high NOx, and a wrong catalytic converter. After the cat was changed the NOx lowered quite a lot, but still too high on idle, and failed smog check again.
The smog-check guy said it has no EGR Valve, How is it supposed to reduce that NOx then?


Answer by Rocky
Submitted on 9/1/2004
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Ok everybody check this out ive done it and it works like a charm now dont get me wrong im not a spokesperson or trying to advertise for somebody but this really does work the egr problem we all seem to have (personally I own a 93 S-10 Blazer with the 4.3) and what I did was bought a new egr gasket with a built in filter made from carbon fiber material once i took off my egr valve and cleaned it out I put this gasket/filter on and this was 4 months ago and i havent had any problems since but before this filter I was taking off the valve and cleaning it around 2 to 3 times a month to keep mine running smooth but here is that website www.tomco-inc.com but i used www.stillenracing.com to find mine but anyways they have multiple applications (GM/Ford.....so on) of the "Klean Screen" which is what they call it, and mine ran about $8.00 way worth it in my opinion, hopefully this helps a few people.


Answer by David
Submitted on 9/21/2004
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Hey I just got a egr valve for my 92 camaro and i paid 182.00 for it hope it fixes my problems


Answer by Doug
Submitted on 9/21/2004
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I have a 96 chev full size pickup, when my ses light came on it was found that it was the EGR pintle(the moving part of the valve). I bought a used one at a salvage yard for $50 instead of a new one for $300. Presto ses light out. If you have a chev 96 or later the EGR can not be serviced but only sprayed with penetrating oil. Run you car or truck without it they don't really need them.


Answer by ken
Submitted on 10/2/2004
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hey i have a 1992chevy van with 5.7 motor i bought it and it had already been at e check twice and failed on the nox part only. so i was thinking that id check the egr valve and i did and after warm up when i give the van gas i feel if egr is moving and it just moves a little bit and stops moving.and i disconected the hose from the egr valve and put my finger on the end to block and gave the van some gas and the vacuum only sucked for a couple seconds and stopped sucking so what is my problem


Answer by mothermayi317
Submitted on 10/21/2004
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I too have a 2001 Ford F150 Triton V8  it has 27,500 miles on it and the SES light came on and Auto Zone did a check and said it was the EGR valve. My truck runs ok, but the light bothers me, since I am a widow and I know nothing about the truck. Where is this valve located and how do I find out how to take it off and clean it? Ok Guys I need some help here. Thanks!!!


Answer by saturn51
Submitted on 11/7/2004
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I have a 92 saturn sc dual overhead cam. it stalls on take off unless I push the gas pedal very slowly. when I accelerate when the car is moving it bogs down and it will blow black smoke and build carbon on the spark plugs very quickly. It only does this after the car has been warm for a while. I have cleaned the first egr valve and when that didn't work I replaced it and that didn't work either I have replaced the plugs, wires, fuel filter and ran Lucas fuel system cleaner through it and I am still having the same problem, any ideas?


Answer by Dee
Submitted on 12/1/2004
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I have a 1998 Mercedes Benz E430.  The "check engine" light was on and I took it in for service.  I was told that the EGR valve needed to be replaced.  That was done at a cost of more than $200.  The light came on again after about 30 minutes of driving.  Does anyone have any idea as to what the real problem might be? Please advise.



Answer by mike zajac
Submitted on 12/16/2004
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I have a 1991 pontiac grand prix the egr needs replacing. its a 230 dollar part.
compaired to a new one how well would a cleaned one work.  michaelazajac@juno.com


Answer by joel
Submitted on 12/22/2004
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for those who have an egr problem here is a quick fix take it off and put a small mesh screen between it, this will fix the carbon problem, it works i did it on my 1994 s10 blazer.


Answer by tons of fun
Submitted on 12/30/2004
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I just installed a new egr valve because my check engine soon light comes on. It hasn't helped the problem!!!!!!!!


Answer by BG
Submitted on 1/3/2005
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What does the EGR valve look like and where is it located on a 1995 ford Taurus? Thanks


Answer by Vortec95
Submitted on 1/5/2005
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I am having the same problem as all of you.  But in my case, the problem persists, then goes away, then comes back,  still the egr right?


Answer by Ricanpwr
Submitted on 1/9/2005
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I owned a 2000 Blazer and is running rough and chokes every time i hit the gas. I was told at a chat room that it is the EGR. Could anyone tell me were it is located on my vehicle?. IM overseas and there is no Chevy services here in Spain. I need to tell the mechanic where it is. Thanks.

My email is ricanpwr@yahoo.com


Answer by deliveryguy5
Submitted on 1/20/2005
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Just bought a '95 grand-am with a v-6. now i know this is not a tiny car but i oughta get better than 11 miles per gallon! I've been told that this is an EGR valve problem.Who has an answer?


Answer by theehussey
Submitted on 1/21/2005
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there is a modified egr gasket you can purchase.  it has a screen to catch the particles of carbon.  i hear it works very well. i'll be installing mine tomorrow.  you'll find it here>> http://www.tomco-inc.com/ or at http://www.northernautoparts.com


Answer by corvette
Submitted on 2/19/2005
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This answer is to NATE:
The EGR can be removed and cleaned.  Since exhaust gases are returned to the engine via the EGR, it's only natural that it will become clogged with carbon.  If it's electronically controlled, the electronic portion MAY be bad, but it is doubtful.  Try cleaning the EGR with carb cleaner and that will probably fix the problem. If the EGR has to be replaced, the 3.1 is a very reliable engine that requires very little maintenance and that will probably end problems for quite some time.  After owning so many GM's my suggestion is to buy the Olds and let her take you wherever you want to go with a little tlc, in other words, just buy (used or new) the EGR.....


Answer by mike
Submitted on 2/20/2005
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i have a 99 nissan maxima,  i have been having issues i think because of the EGR valve.  i cant fully accelerate with out feeling like m car misses, funny thing is that some days its worse when other days it runs at top performance. i thought it was my intake (running my air/gas mix to rich) so i took it off, helped a little but of course lost performance.  anyway i am not sure about where the EGR is located does any one know????


Answer by Tina
Submitted on 2/23/2005
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I have a 1995 Chevy Blazer that had a bad EGR valve. It would cause the vehicle to surge badly and sometimes mildly at low speeds and the Service Engine light would come on while it was acting up. Another unpleasant side effect is that it causes my brakes be be unpredictable and weak. I had the valve cleaned out a few times by our mechanic and that helped but eventually had to replace it. ($300+).  The new one is only a year old and is now causing surging again.

I've found a filter that can be used in coordination with the EGR valve and I'm just waiting for it to come in so my mechanic can install it. (Fortunately I have a  very trustworthy mechanic). I can't say if it works well or not, but it's supposed to keep the carbon out of the valve so you can simply clean the filter each time and not replace the pricey valve. Here's the website: http://www.tomco-inc.com/

Good luck!


Answer by Kat
Submitted on 2/26/2005
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I have a 95 GMC Jimmy.  I took my car to a dealer and they replaced by EGR valve back in 2000.  Since then the check engine has come on three times with the EGR code.  This last time they want to charge me $500 to take the part off and their telling me that it needs to be sandblasted.  Should I let them do this?  


Answer by one hard xtreme 03
Submitted on 3/1/2005
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I have a Chevrolet Xtreme 2003(s-10)and at 40K miles its having EGR problems.  It has a weak sound coming from the engine, by the exhaust.  I found out that Chevrolet's warranty covers emmissions upto 80K miles or 8 years whatever comes first.  If you have a Chevrolet confirm with  your local dealer if its covered.  Good Luck!!!


Answer by one hard xtreme 03
Submitted on 3/1/2005
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I have a Chevrolet Xtreme 2003(s-10)and at 40K miles its having EGR problems.  It has a weak sound coming from the engine, by the exhaust.  I found out that Chevrolet's warranty covers emmissions upto 80K miles or 8 years whatever comes first.  If you have a Chevrolet confirm with  your local dealer if its covered.  Good Luck!!!


Answer by James
Submitted on 3/3/2005
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I have recently had to replace the EGR valve and more recently, have had it cleaned and re-programmed.  As I drive a Renault Espace, the electronics are affected by the EGR valve, and the service light puts the vehicle into idle mode, i.e. I can only travel at low speeds until the problem is fixed.  I have had these things sorted through warranty, but my Renault dealer tells me to clean and re-program the EGR valve would cost around £40.


Answer by ChillyPalmer
Submitted on 3/10/2005
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my car is a 1997 honda prelude base.  The code i keep getting is p1491, it's the EGR valve lift.  Here is what happens to my car, it either stalls whenever it wants to, acceleration hesitates alot, very slow btw, and  egr caused my clinder 1 to misfire.  Replacing it is worth the money, however go to autozone.  OEM's at dealers will rape you.


Answer by TD
Submitted on 3/28/2005
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My 1990 Isuzu pickup (2.3L 4 cylinder, 115 K miles)developed rough, slow idle, so I checked the vacuum operated EGR valve and found it to be stuck about half open. Removed the valve, oiled the exposed shaft both on the outside (thru the diaphragm framework) and inside thru the flow passage. Used a hand vacuum pump test tool to apply and vent vacuum while working the valve back and forth to "wear off" the carbon deposits on the valve stem, until it would move freely without sticking open. Saw plenty of black crud inside the passageway but it was not plugged up, so did not clean it up. Put it back on, and idle was like new again. You can see the stem move on a working valve if you rev up the motor in the driveway and look. The faster the motor goes, the more it opens. Valve must be closed at idle. Old ones like this that have no electronic components on them should all be easy to free up. For those of you with error codes - if you have a smooth idle, but the engine code says EGR is bad, your valve is not opening properly, which does lower economy a bit and increase emissions. Leaving the faulty EGR valve as is will NOT damage your engine. If your idle is smooth, you can ignore the fault if you do not care about the slight fuel hit and emissions performance. In the mid 70's, I took the EGR valve off and bolted a home made cover plate over the mounting to close the EGR system - back then it was a new smog device and most of us hot rodders wanted them taken off. If yours is stuck open and you can't afford a new valve but want to restore smooth idle, you can cut a heavy piece of gasket material sized to the full footprint of the valve and sandwich it in place between the valve and the mounting spot. Be sure the valve pin does not protrude from the flange to where it would puncture the gasket. Happy driving!


Answer by MainMat
Submitted on 4/12/2005
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Hey!  I love this site. I just stumbled upon it by accident looking for how to repair an egr valve. I see a lot of good questions on here, but no answers! ???  bummer. In the old days we used to just clean them and stick'em back in and that was it. Now there's like 2 or 3 pieces to it with electrical hookups. Just wanted to know if I can still clean it,(or them) and put it back in and go??  thanks in advance..


Answer by Tru
Submitted on 4/15/2005
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I dont kno if any1 will get this but if u do email me at DaTruMeaning@yahoo.com

Well i have a 92 Chevy Beretta that runs great but the dam EGR Valve needs replacement and probably has since i brought the car 3 months ago...Recently the engine started idling rough but I found that if i go out and warm my car up every 8 hours or so it stops this problem...however the engine still knocks and the car still drags on acceleration SOMETIME...Im a college student so i really dont have the 500 - 700 that the mechanics are talking about for a new one so i just need to know how long can i drag this out...like i did research and this thing doesnt seem 100% important so what should i do?...its electrical so i cant soak it...did anyone else manage to continue driving without any major problems???


Answer by DoritoBreathFury
Submitted on 4/22/2005
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I have a 1994 GMC Sonoma.  Today I just uninstalled my EGR valve, because the months and months of hitting it with a blunt object finally stopped working.  It seems there was some kind of hard oject (looked like a tiny stone, carbon I suppose) lodged in the spring loaded device.
It is kind of a tight spot to access this EGR valve.  I went through the alternator side instead of what would have been more time consuming the airconditioning side.  So I just had to take out the alternator first.  Well, I will try some of the things mentioned like soaking it in cleaner etc.  
I appreciate these tips.  Canadian Tire wants $300 CA just for the part alone and I have resisted this now for over a year.




Answer by Gridleak
Submitted on 5/3/2005
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Often times folks will clean and replace the EGR valve but... they fail to clean out the engine port where the EGR valve is mounted.

Before we go there however, allow me to digress a bit, and explain a couple of not so obvious items.

Residual fuel as opposed to the "inert exaust" concept as theoretically expounded upon above... is a great theory but the problem is an improperly tuned engine shoots that theory all to pieces, and there are few properly tuned engines on the roads today.

The fact is most engines are pretty poor at burning fuel and there is often a lot of left over unburnt fuel in the exaust. This can be proven with a simple infrared thermometer that measures the tempreture of the exaust gasses passing through the catalytic converter. If your catalytic converter is hotter than "spec" then you're waisting a lot of fuel, and your hydrocarbon emissions are gonna be through the roof. Most any good muffler shop can check this with their thermometer in five minutes. If they don't have a thermometer then they ain't a good muffler shop.

Also most older engines pass a lot of oil through the cylinders, and this causes carbon build-up, and sludge. Which in turn gets passed through the exaust.

Now, we get back to where we came in... the unburnt fuel, carbon, and sludge gets recycled through the EGR valve back into the engine. The sludge and carbon eventually clog the EGR valve causing it to fail, as well as clogging the EGR port/passage into the engine.

When replacing the EGR valve... one must clean the passage as well of any sludge and carbon. I've found the best way to do this is with a coat hanger, and a small, preferably cylindrical, and preferably wire brush. A good skinney screwdriver helps too, and being carful to break the carbon and sludge loose but not shove it on down in the engine. To remove it from the engine passage I stick my shop vacuum cleaner nozzle to it and suck it out of there.

Once you have a properly free flowing EGR port, and properly working EGR valve, then the residual fuel in the exaust IS burned which causes a slight increase in your fuel mileage, and a measurable drop in your catalytic converter temprature.

This has an added benefit in that to much fuel in the exaust is death on the catalyst whose purpose is to burn residual fuel (hydrocarbon) in the exaust.

It's all a slippery downhill slope that begins with proper, or improper, engine tuning... and a properly, or improperly funtioning EGR valve.

And don't forget to clean the engines EGR port.



Answer by Replica
Submitted on 5/5/2005
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To put some myth to rest here, yes the EGR serves more than 1 purpose inadvertently (it cools the combustion chamber temperature to eliminate oxides of nitrogen; and also aids your engine in operating efficiently)

So, I changed it...now what?
Now that you've changed your EGR valve you find yourself still getting a faulty code report from the ECM, this is probably due to the on board's KAM (keep alive memory) the best way to re-set it? From my own experience, disconnect the battery terminals overnight

What problems can a faulty EGR give me?
This is a real mixed bag, and it really depends on the system. Some makes and models are much more affected by the EGR system, while you would hardly notice with others but here are some things you can generally expect to see:

1:Carbon, excessive carbon output in the exhaust, in higher RPMS you may even get a black "fog"

2:Ping, engine knocking due to the excessive temperatures

3:Performance Loss, decrease in accelerating power, rough hesitation under heavy load (passing gear)

4:Poor Idle, Very shaky idle, or no idle at all

If you want to check your EGR manually you sometimes can, however the EGR is only meant to be opened under normal operation temperature in excess of 2300-2500 RPMs , so unless you meet these conditions it is not a good way to manually check the plunger valve for movment ..

They can be cleaned , remove it , spray it down good with a fast evaporating carb and choke cleaner and tap (do not hit it hard) it with a hammer or some such, you should note lots of carbon chunks falling out (black stuff)


Answer by ddltrek
Submitted on 5/21/2005
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I had the same problem. Engine code said it was an EGR related problem. Garages wanted $110 to run a diagnostic test to pinpoint the problem. I could see no blockage but after cleaning the value with carb. cleaner I could blow through the valve. So far so good. A new valve is $65.00


Answer by Weasel
Submitted on 5/29/2005
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96 Lumina EGR valve. This is a 3 solenoid valve. AZ and Advance both sell it for around $270. It can be "rebuilt" if it's not a solenoid coil problem. Most likely (as was with mine) one or more of the solenoid plungers is stuck. They are bad to condense moisture and rust inside the plunger tube. Pull it apart, check the solenoid plungers for rust. Clean it and it should work fine. Mine was turning on the check engine light randomly for about 2 years. No symptoms other than the check light.


Answer by eugene
Submitted on 6/6/2005
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I just had an inspection done to my newly-bought 2000 Mercury Sable and it failed. The problem was said to be the EGR valve.  The car has 107k miles on it. I went to the shop and they couldnt quite figure out the problem but gave a shot at changing the EGR sensors.  We tested the car on the highway for a good 60mph for about 7 miles and the light hasn't lit up.  Im not sure if I should go try the inspection again and see if it passes.  Maybe if I clean it, it will pass inspection?

The diagnostic trouble code was P0402 (EGR Flow Excessive Detected)

Any help/ideas? Thanks.


Answer by babygurl
Submitted on 6/16/2005
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I have a 97 Neon and my EGR valve is bad.  It does cause rough idling and stalling.  Mine was seriously bad and dangerous if you pull out on the highway and your call stalls.  I would highly recommend replacing it if this is the problem.  Mine new only cost $60!  So good luck, hope this helps.


Answer by clank
Submitted on 6/21/2005
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95 dodge ram ,idle rough think it needs an egr valve


Answer by Kim
Submitted on 6/28/2005
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I have a 1994 Gmc safari van and I went to Auto zone and told them that my check engine light came on and they checked it and they said that it was the EGR valve.  My husband and his cousin who is a mechanic said that I should not worry about it because it will not do any damage to the vehicle.  I have my fingers crossed that they are correct.


Answer by Jumper
Submitted on 7/4/2005
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I just got the code P1404 in my 02 Explorer and the machine said it was a "secondary emissions".  After I took the little wire of hose whatever it is off I sprayed some B12 into the little hole and sprayed some on the outside of the hose that comes off of it and reconnected everything.  When I started my truck back up the light blinked a couple of quick times and went out.  The EGR valve for the '02 explorer is $65 so it will eventually be replaced.


Answer by mama x
Submitted on 7/5/2005
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1996 Buick LeSabre: check engine light on for a few days now, was burning A LOT of gas, stalling, very rough idle, almost jerking, then finally I tried to give it gas from a red light and it was very hard to push -I had to slam my foot down to get it to move and then pump it with my foot -figured it was time to quit putting it off.  Check engine light came on 3 times before and I had Autozone check it and just turn the check engine light off for me.  I waited like 2 years and there seemed to be no problem (yet . . .)except what happened above.  Took car to garage and had to pay $40 for them to tell me what I already knew (EGR valve) from before but was scared there could be another prob, since oil was low (turns out our Wal-Mart routinely short-changes you on the oil change: oil changed last month and engine only had 2.5 quarts instead of 5 -shop checked for oil leaks and none found) so am paying $502 for egr valve and tune up -yikes.  Had car tuned up completely last year also and spark plugs corroded (white crust=water) ALREADY -cheap gas does this to them apparently -do not use Sheetz, Wal-Mart, or BP gas.  No prob with Exxon, Shell, or Sunoco apparently.  Wish I would have known about the carbon cleaner long ago -will remember that one.  Thank God I have a credit card (there's no way we have 500 bucks to spare but I was afraid the engine would blow and we would be out of a car!!!!)  because I have a family to take care of and need the car running.  Unfortunately there goes our family vacation this year.  :0(  They should give you the option of cleaning the thing instead of a 300 dollar replacement. Good luck all.


Answer by ron
Submitted on 7/28/2005
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If your check engine light comes on and you would like to find out the problem go to a local parts store like auto zone .They will do a diagnostic check for free.I have a 02 escape and the light came on and it was the egr valve it cost about $70.00 to replace on that model


Answer by ron
Submitted on 7/28/2005
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If your check engine light comes on and you would like to find out the problem go to a local parts store like auto zone .They will do a diagnostic check for free.I have a 02 escape and the light came on and it was the egr valve it cost about $70.00 to replace on that model


Answer by XCypher
Submitted on 8/7/2005
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It still makes not much sence to even have the egr valve on there, because why would u want the already burned emmissions going back into the air intake. I know they sell EGR Block off Plate Kits for about 50 bucks for racing purposes.


Answer by jenn
Submitted on 8/14/2005
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I have a 94 pont grand am i was told when i got it the egr valve needed to be replaced. the car runs pretty smooth and the check engine light only comes on when on the expressways or thruways when doing at least 60 mph but as soon as i turn car off it goes out. my questions is my car now wont start it turns over like its gonna start but wont. could this because of the egr valve???? my car was running fine the last time i drove it and didn't seem to be acting funny in anyway. i wondering if i cleaned my egr valve if that will help and whats the best way to clean it??? thanks


Answer by Nicholas
Submitted on 8/16/2005
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Well an Egr valve will not Cause damage to a cars engine, but it will decrease performance and Gas mileage, which in these days is very important. Cleaning is the best thing to try at first, but if that does no work, you might want to replace it. You'll save you're self money by getting better gas mileage.


Answer by ArmyBear
Submitted on 8/17/2005
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I have a 2001 Toyota Corolla and I have been having a lot of problems with the check engine light. Last year, I replaced the cat. converter and last month, I replaced both O2 sensors. The light is still on and mt car idles really rough when I first start it. It also stalls, when I first put it in drive, if i don't pump the gas. My car has ran great up until this problem. I would like to clean the EGR valve, but I don't know where it's at on my car. Any suggestions??


Answer by Pathedj54
Submitted on 8/25/2005
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I own a 93 Ford Econo Van 350. The SES light has been on for about three months now. I've been told that it's a EGR issue. I want to follow the suggestions that I've gotten in here with reference to "cleaning" the EGR Valve, but I have no idea where it is. If anybody can tell me what it looks like or where I can find it, please let me know. Thank You


Answer by sabb
Submitted on 8/27/2005
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I got toyota estima emina import car.I heard in england most of the car they dont have EGR valve only import car have this valve beacuase the stric law they have.If i block this valve does it effect the engine. somone research on this and saying if u block this valve the engine run more smuth and effience it improve the power its give more power. beacuase EGR valve takes dirty hot air back to engine so it clogged up the engine and engine runs more havily. beacause in some country like japan they have stric emmision law thats why they put this EGR valve but in britian they dont put EGR valve beacuase here we dont have law like japan.is this true and someone know about this then please e-mail me on sab_bir@ntlworld.com .i just want to know if i block the EGr valve then this will effect the engine


Answer by P.A. The D.J.
Submitted on 8/28/2005
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Hey,I have the same problem. Seems to me that EGR Valves are a pain in the arse. Maybe they should place them somewhere that is easier to work on? I have a 93 Ford Econoline 350 Van, and the EGR Valve couldn't have been installed in a more difficult location to work on. Have a great day everybody!


Answer by Sorcerer
Submitted on 9/4/2005
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If you have a vehicle that is older than a 94, BUY A NEW CAR - STOP INVESTING IN THE OLD VEHICLES, dude an 88?  17 years old and you are still buying new parts?  Do you have something wrong with you?


Answer by Mike
Submitted on 9/10/2005
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There has been some bad advice here.  The EGR valve lets in oxygen-free exhaust gas in at intermediate throttle settings (it is off at idle and off at WOT).  This lowers the effective displacement of the engine and cools combustion temps.  This increases cruise mileage slightly and significantly decreases smog-causing nitrogen compounds in the exhaust.  Side effects are all positive (lower engine wear, no loss of performance).


Answer by rickoroma
Submitted on 9/20/2005
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I have a 93 chevy lumina, and had my catylitic converter removed do too the cost.
what effect will that have on your EGR valve? some times i lose power on accleration and fumes smell god awefull!


Answer by joe
Submitted on 9/28/2005
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I changed the new EGR valve and serenoid in my '97 Ford Taurus, stupid "Service Engine Soon" light still on. The last Ford I'm gonna buy...:( Please help!!


Answer by hmmk
Submitted on 9/29/2005
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I have problem with the check engine, and when i scan it I've got the code 1400, which is EGR problem and DPFE low voltage, and when i cleaned the EGR valve, the problem was fixed, so try cleaning the EGR valve.


Answer by ingerm
Submitted on 10/3/2005
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I too as Erci picked an EGR valve from autozone for $40.... took the old one out, cleaned the area around it with a spray bottle of cleaner to remove any carbon, and put the new one in. Seemed pretty simple. My check engine soon light came on after I got up to 55MPH.  


Answer by Geralyn Abinader
Submitted on 10/6/2005
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Hi - our 1997 Toyota Camry had the engine light come on and the diagnosis was P0401. 3 parts are being replaced, hose, vacuum switching valve and the modulator. we're being charged almost $500. Does this sound right?



Answer by Wendy
Submitted on 10/7/2005
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My check eng light came on and the dealer told me my EGR valve was cracked.  I have a 2000 6 cyl Camry.  Cost, over $540. for the valve and install.  How does a valve get cracked when I never had an accident?


Answer by Larry
Submitted on 10/14/2005
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Why after going to get a Lube , oil and filter and they checked everything, my car just died 3 days later, and took it took dealer they said it hydro-locked and needed a new engine.


Answer by Shadow
Submitted on 10/25/2005
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Hey guys and gals; my truck is manual an it accelerates by itself in neutral.   Sensors are ok.


Answer by Londi
Submitted on 11/13/2005
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I have a 98 Taurus that shakes and I get an EGR valve code as a problem due to the check engine light which comes on and starts blinking when I am driving at 50 mph or higher. Is it a defect


Answer by Truc C. Nguyen
Submitted on 11/30/2005
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My car is Toyota Camry 2000. The car had the problem "Check Engine" light come out. I brought to Toyota dealer. The found EGR System clogged up.

What reason caused this problem while my car is only 54000 miles ?

Thanks for your explain.



Answer by jack
Submitted on 12/1/2005
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Go to auto zone and they will check your check engin light for free. mine was a egr valve also and they said mine would be $58.00.
i have a 2001 merc. gran mark.
i thought that was a great price.


Answer by sailor
Submitted on 12/10/2005
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can you just remove the EGR valve and put a planking plate between the valve and the intake and reinstall to prevent carbon build up all the time?


Answer by engifineer
Submitted on 12/11/2005
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To the person who paid $40 at autozone, I hope you are lucky, because you get what you pay for, and there are reasons why autozone has low prices. I personally know 2 shops who refuse to touch any part that comes from autozone. Alternators that last all of a year or so, compressors that chew themselves up or perform horribly and fuel pumps that give you plenty of practice R&R the fuel tank to replace them again to name just a few reasons.

Once the EGR goes, it will definitely create some running issues, especially at idle or at a constant cruising speed.


Answer by spike
Submitted on 12/12/2005
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ur egr valve if faulty and closed,wont hurt ur car, it just wont pass ur smog test and will be bad for the inviorment not to mention a very cold start in the mourning, meaning ur egr valve is prob faulty and u dont even know it, but if its stuck open due to carbon build up, ur idle will be rough,but still be good at acceleration, its easy to clean if its not electric, but most of the newer cars have the electric ones, so there not cleanable...if i were u guys i'd just get a muscle car and call it good


Answer by Emily
Submitted on 12/26/2005
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I own a '93 GMC Sierra and I have been having trouble with it stalling and idling roughly. I had been told before it was the EGR valve but I just plugged it off which worked for a while but now it has got so bad I cant do that anymore so I bought a new one at NAPA for $45 Hopefully it will solve my problems but with my truck you never really know


Answer by Sparkplug
Submitted on 12/28/2005
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A egr valve will not hurt your engine... however it will make the vehicle idle rough. The difference of the price is simply how advanced it is computer controlled wise. As for how quick you need to replace it well that depends. Do you like gas mileage? Do you like your car to idle? and do you like performance? plus you have to deal with that pesky check engine light.



Answer by glen
Submitted on 12/30/2005
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I agree with Duston, I also have a 94 4.3 V6 Vortec (in a Sonoma). GM should have done something as it's a well known flaw in that engine.  I need to clean mine every year or so :(


Answer by darrbonn
Submitted on 1/1/2006
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Would the egr valve have anything to do with the car hesitating a bit when changing gears?


Answer by mikeness
Submitted on 1/11/2006
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everyone is thinkin of a failed EGR as one that is stuck open and causeing stalling... mine was stuck closed so it had no exaust going into it and causing my car to run rich a bit but better performance. i changed mine myself and gas economy is through the roof and performance was dampered a bit. i drive a 95 plymouth neon


Answer by Tim
Submitted on 1/30/2006
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I have been having trouble with my 1995 chev lumina. The EGR valve leaks exaust while the engine is running. I can smell exaust around it when the engine is running. It is a brand new one and it looks good. Is it a bad egr valve or can it be repaired. The car runs fine but I don't like the smell.


Submitted on 2/9/2006
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$79.00 (autozone's price) NOW I CAN CHECK MY OWN


Answer by Dave
Submitted on 2/10/2006
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I recently installed a new Chevy 5.7 crate engine into my truck and used the old EGR valve. After the install my check engine light came on, so I checked the code and it said EGR valve, unfortunately I ignored it, as it would go off after shutting the engine off. About 3000 miles on the new motor and a intake valve burned out, I took the truck to the dealer, and they told me that the EGR valve stuck open and burned the valves, hence voided the warranty on the new motor, $800.00 later I learned don't ignore the fact the some people will tell you don't worry about it, it can't hurt your engine!


Answer by stagehandy
Submitted on 2/11/2006
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Egr valves?  Would a disconnected tube from the side of the egr valve cause a screaming, whistling sound when I accelerate?  I have paid to have egr replaced and then when the ses light came on, I took it in and paid to have new holes  drilled because there was a nut shoved in it to hold it in place.  I am real tired of paying out the nose for these repairs and am thankful to find this site to get some help and maybe offer some solutions too!  Thanks!


Answer by Car Dude
Submitted on 2/12/2006
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Answer by Car Dude
Submitted on 2/12/2006
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My new 1996 S-10 with a 4.3l was under extended warranty (until 2000)and had many EGR's replaced. Finally, the dealership said they would not replace another one until I paid to have the carbon removed. They disassembled the intake, cleaned out the carbon and re-assembled everything. Six hours of waiting in the waiting room and over $100, they finally finished the job. They also replaced the EGR while they were at it. Thirteen months later, the light came back on and I took it back to the dealership to have another EGR installed. They said they had a better way to remove the carbon. They would attach a hose to the fuel rails and run a liquid through it. After driving 400 miles, they carbon would go away. I would have to pay over $300 and I told them, "No way". I traded it that day for a new 2000 S-10 with a 2.2l (4 cylinder) and haven't had any problems with EGR's!  


Answer by Ron
Submitted on 2/24/2006
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I have had the same problem. I used my OBDII to clear the code. Works fine. (for a while) Now I went from 375 mile a gallon to 157 miles a gallon, my spark plugs are starting to fail and it looks like I have to replace the catalytic converter because the smog keeps getting thicker and thicker. I will try to clean the EGR instead of paying $125.00 for my 2001 GMC Jimmy.


Answer by dude
Submitted on 2/28/2006
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I know how to replace EGR valve for 98 accord v6, however, I heard that you have to drill something else to make it work. Does anyone know what that thing is? Please let me know. Thanks


Answer by lj
Submitted on 2/28/2006
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i have a 1993 chevy blazer 4.3 liter 2wd. it started to idle roughly and finally wouldn't start so i took it to my favorite mechanic and sure enough it was the EGR valve clogged with carbon (he charged me $45.00). now it did it again and i couldnt get in touch with my favorite mechanic and i took it elsewhere. Well the dingbat put it on the diagnostic machine ($120.00) and quoted me $500.00 for labor and flushing the fuel system. i told him to take the EGR valve off and check for carbon. He said he did that but the idle was still wacky. well i figured he was either an idiot or a liar so i took the vehicle home. Now i know WHERE the EGR valve is but i cant figure out how TO GET IT OFF if i want to replace it. HELLLLPPPPP!!!!!


Answer by Stevo
Submitted on 3/9/2006
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I had a diagnostic and they told me on my 94 Chevy Blazer that it was my EGR Valve. The total for them to diagnose it costing $90 and the parts + labour all came to a total of $582 from AAA (Automark Car Center) they charged me a total of $350 just for the EGr Valve. I believe I got ripped off because I've seen them for around $150 at various other places


Answer by Tim
Submitted on 3/13/2006
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I have an 85 Oldsmobile Omega,

My car has been running like crap, and the  automatic transmission has a function where when your going 35 MPH or over it connects directly to the wheels, and lets the transmission cool. Lately it would go into it and come out, in and out, would not stay in it. The car also stalled. I seriously thought something was very wrong with my transmission..

I checked the EGR vavle and it was clogged. I took it out and cleaned it out with CARB cleaner. I put it back in and it doesnt stall, and the transmission is fine. Also it doesnt backfire and gas mileage is better.

This EGR vavle had to be STOCK.. on a 1985 car. A old ladie owned it and none of the tuneup parts were done, this was the only thing I overlooked. It was nasty and I got it to be clean with a $1.00 can of carb cleaner. It would have cost me $70.00 to get a new one.

DONT buy a new EGR vavle unless you cant get yours clean, or you have $70-$100 you want to donate to a parts store or mechanic.

(Theres a diaphram on the back, you need to push up on it and it should go up somewhat easy and also come back down. If it doesnt it needs cleaning OR buy a new one.. you decide lol)


Answer by joe
Submitted on 3/15/2006
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Just take it off and put a plate on it.


Answer by Dogstar21
Submitted on 3/23/2006
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My 1999 Maxima failed inspection for EGR and for Knock Sensor I. My check engine light was flasing on too. I had a buddy at auto repair place check the EGR, and the tube was clogged. They cleaned it, reset the system (maybe unplugged battery cable) and I drove straight to the inspection place..it passed. So maybe the 2 warning codes for EGR and Knock Sensor were due to this alone.  


Answer by Jeff
Submitted on 4/1/2006
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My scan code was P0400...its says "EGR Flow". Is the P1404 code for the valve itself, or what?


Answer by DAlmar
Submitted on 4/5/2006
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I have P0401 for 1998 Chevy Venture, changed EGR three days Engine Light come back, take to mechanic suggest to clean all head/intake manifold $400 declined. Three months later still have P0401 and also P1404 and P420. Vehicle runs fine except annoying light and knocking when start first 5 minutes. Any suggestion what to do Thanks


Answer by skzdalimit
Submitted on 4/11/2006
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For my 2001 Ford Mustang, the EGR costs $59.  It sits right behind the radiator on top of the engine so all I have to do is undo 2 bolts, the vacuum line, one pipe and the eletrical connector and I'm done.  Shouldn't take more than an hour for me.


Answer by StephieGu2
Submitted on 4/11/2006
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I bought a 94, buick century...and when i purchased the car the check engine light was on. and the dealer told me to bring it back and he would fix it, so i took it back and he siad it needed a part, and didnt want to explain it to me, because he thinks i dont kno what he will be talking about anyways. So i took the car home and it came back on, now i gave it back to him to check again and he siad it has to do with the egr vavle?? he said he cleaned it out a little?? is this possible?? Should he have to replace it? if its not replaced will it be worse later down the line??


Answer by Ron
Submitted on 4/14/2006
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EGR Valve, if malfunctioning, can it cause irrational action of a trans, 2000 Merc v-6 Sable?  Thanks


Answer by Stewie
Submitted on 4/14/2006
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Hello everyone, Okay so I just turned 19 and I'm not going to college and I've been saving up for this car all last summer. It's a 1996 Mazda MX-6. It drives really nice and I love it, but when I put it in drive and I'm not moving it idle'sreally rough and everything in the car shakes. Sometimes it'll act like it wants to stall but doesn't. I got a fuel injection cleaner and poured it in my gas tank b/c it said it helps engines that idle rough and it made a difference on my acceleration but it still idles really rough. Does anyone know what's wrong with my car?


Answer by Clint
Submitted on 4/19/2006
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For you GM owners, I've had a 95 Saturn SL, and I currently drive a 95 Chevy Blazer. Both of these have the electric-only EGR valve. If you are having rough idle, or poor performance, just unplug the electrical connector. My EGR keeps getting clogged after 200 miles of continuous driving. I finally yanked it, removed the carbon so it would close, installed it, but left it unplugged so I could drive home. Try removing your EGR at some roadside gas station. I was not happy. But my engine problems cleared up after a tank of gas.


Answer by jeff1574
Submitted on 4/21/2006
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I have a 97 taurus sl (260,000 Kil..)..when im driving it stalls for no reason.....could it be the fuel pump?

please help with any information


Answer by Sjez
Submitted on 5/1/2006
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EGR valve problem also on my 98 Camry V6. Toyota Service Dept suggested replacing it for $400 (Aus)  but said if you don't it won't really affect your performance (that I'd notice).
It's been like that for close to 2 years now and no problems.


Answer by ilya
Submitted on 5/16/2006
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Guys i got a 96 ford probe gt and once had a EGR problem i went got it cleaned because the part for my car cost $500. I ended up being cheap but 8 months later my engine died :<, i got it replaced and my mechanic apperantly put on the old EGR Valve on the new engine, 1 month later my new engine sounded like CRAP, i went to a different mechanic and they said i have a EGR problem and apperantly if i got it replaced 9 months ago my old engine would have never died. so im just recomending everyone dont be cheap and just pay the money for a new egr!


Answer by andy kranick
Submitted on 5/18/2006
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i would like to know how much it will cost to remove and clean carbon from the egr passages.0n a nissan sentra 97


Answer by Linn
Submitted on 5/24/2006
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I have a 1994 chevy corsica and my engine light comes on due to the egr valve. would it hurt my vehicle if i took it off. Plese Help!!!


Answer by veronica
Submitted on 5/27/2006
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I have a  "Ford Taurus engine light was coming on, checked the hoses going to the egr valve, they were melted together , changed the hoses, now light doesn't come on any longer.


Answer by bill mead
Submitted on 6/1/2006
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My car, year 2000, was running in a jerky manner while driving at steady speeds. No engine light was on. The car work shop found no computer events, but still changed my spark plug wires. Which made no difference. After much trouble, I disconnected my EGR valve by unplugging the electronic plug. Now the car runs great! I do not hear any pinging. Before disconnecting the valve, the car had passed the smog test. Question: Do newer fuel injected cars burn cleaner and do not need the ERG? How do they effect gas mileage? Will leaving it disconnected hurt my motor?


Answer by joerudy
Submitted on 6/6/2006
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I have a 1995 gmc vandura starcraft custom  van with a 5.7L engine with 160,000 miles. I replaced the egr valve once 2 yrs ago, because i was told by a mechanic that it was bad, however, I noticed that some spark plugs had carbon buildup on the tips when I replaced them at the time of egr replacement. I just recently tuned the engine and noticed the plugs had carbon build again but not as much as before, also, I noticed that the exhaust fume smell rich.  Would this be an egr problem. the catalytic converter was removed at about 150,000 mi. the van has been to the southern most of tip of Florida, to San Francisco, south Dakota, Michigan, Canada Niagara falls and all over Texas. But it does give me lousy mileage. Other then that no major problems. I hope i don't jinx myself. thanks


Answer by JeffB
Submitted on 6/9/2006
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I recently failed emissions testing when the computer read Failed O2 sensor.  After replacing the O2 sensor, the computer gave an failed EGR reading.  My mechanic says it's the back pressure solenoid that is failed, so a good carbon-cleaning won't help. Has this problem happened to anyone else?  I'm wondering if the mechanic did something when he installed the O2 sensors that caused the failed EGR back pressure port. (It's a '97 Chrysler Concorde if that matters)


Answer by Scott-old-boy
Submitted on 6/10/2006
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Those people saying the EGR valve is important to both a reduction in pollution and engine economy are correct. My daughter's 91 Mustang had the same problem. I removed the EGR valve - vacuum line, 2 bolts, large nut on pipe and electrical connection. Sensor tells computer if it is working. This one was stuck closed. Dug out the carbon, removed the sensor, 3 small screws. Had to tap on the plunger with a small punch to free it up. Put the sensor back on, used a small piece of tube so I could suck a vacuum on it to withdraw the plunger all of the way and dug out as much carbon as possible. No more check engine light. I'll buy some carbon remover and clean it again better. It is possible for them to get stuck either open or closed. If the diaphragm is broken and it won't hold vacuum is the only reason for buying a new one IMHO. Scott


Answer by Mandi456
Submitted on 6/12/2006
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I have a '95 Chevy Blazer, and I had a big problem with the EGR valve, I was having it cleaned out at least once a week. Then we did some research and found out there is a screen you can buy that stops the carbon from going through and getting stuck, and it only costs from $5-$10.  I haven't had a problem with it since.


Answer by zee
Submitted on 6/12/2006
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so you can


Answer by fred
Submitted on 6/22/2006
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have a 94 Pontiac Bonneville,having trouble with egr valve the garage person said it would cost $300 dollars is their any way that i can clean it myself?


Answer by crszman
Submitted on 6/25/2006
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I own a 97 Toyota Avalon with 190K miles.  My Check Engine light came on and I had it checked at Advance and Autozone with the same results.  EGR Valve carbon build-up.  The man at Advance told me it I had ever tried a product called Seafoam.  He said it might help to burn off the carbon on the EGR valve. I bought a bottle and ran it through the brake booster line in front of the drivers side.  I took off the vacucum line and poured the Seafoam through the hose.  The car started smoking escessively which the man told me was the carbon was burning off.  He reset my code and I drove it home while it was still smoking.  The next day the check engine light came back on but on the way to church the light went off.  I have not had the engine checked yet for any codes but a $6.00 bottle of Seaform, if it has worked, saved me over $250.00+ in repair costs.  Now I have found a good product to keep my injectors and engine clean as I work my way towards 300K on this engine.


Answer by Ron
Submitted on 6/26/2006
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My toyota pickup truck would start and then stall or not keep runing. The egr valve wax carboned up and i cleaned it up and it runs as good as new


Answer by dave
Submitted on 7/1/2006
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I have a 95 eagle talon ESI(noturbo) and I have a problem with the idle.  I think it is the EGR valve but not for sure yet my car had been customed and lots of stuff been removed or changed.  But my engine is about the same but i have cold air intake.  But when i start my car it idles really high then about 5-10mins later matters on temp of day i think its goes below 1 and so i give it gas agian it kicks up to high rpm'sagian then when i drive it about a block from my house it stalls and i get no  throttle excell can anyone put me in the right track??


Answer by tfic1102
Submitted on 7/4/2006
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I have a 2002 Isuzu Rodeo Sports and for the past week, it's been running like crap- idling and sputtering. I thought it was from cheap gas. But the other night, it would not accelerate past 20 mph and the CEL and the Reduced Power lights came on. It's a clogged EGR valve.
The Isuzu dealership quoted me $350 to replace, but if I can just take it somewhere to have the valve cleaned (rather than have the entire valve replaced) I will. !!!!!


Answer by Maq
Submitted on 7/6/2006
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I have a 98 toyota rav 4 and the engine light came on.  BDI code is P0401. Took it to the mechanic, he told me I need to change egr valve.  After 2 hrs of driving the light came on again with same code. I had to change the BSB sensor and EGR modulator. After driving for a few minutes the light came back on.  Can some one help.  What could be wrong?


Answer by Immigrant E
Submitted on 7/7/2006
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I have a 1995 Eagle Talon ESI...When I brake, the rpm drops down to under 100 rpm...The car starts to shake and sometime shut off...after doing some research, it seems that the low idle is caused by a malfunctioning EGR valve...


Answer by cloclo
Submitted on 7/9/2006
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hi i have probleme with my egr valve also on my ford focus 2001.my car war jurking in between 60 to 70 km.then i unplugged it and it's working really good the only thing my engine light stays on all the time.but who cares ? the car works fine.My only question is :can it hurt anything by having my pipe disconected?   thank you!  


Answer by JimBo
Submitted on 7/17/2006
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I also have the code 32 on my 87 GMC pickup.  I cleaned the EGR valve, no help. I repleced the EGR valve, no help.  Check Engine soon light returned.  After a few weeks I found the switch that controls the EGR valve was faulty. I have yet to get one, but will soon. I didn't know it had one until a friend told me about it.  I wish I did that first. It cost less than the valve.  The engine stalls when putting into gear and runs rough at low speeds. As soon as I can I will replace the switch.  IT has two wires on it and controls the vacume to the EGR valve. On my truck it is only a few inched away from the EGR valve. Follow the vacuum line to see if you have one.


Answer by Marquentin
Submitted on 7/18/2006
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I have a 2001 Ford Mustang and the service engine light popped on,took it to auto zone,it was the EGR valuve and so i changed it costed 54.99,but now it pops on and off sometimes,and reads the same thing EGR Valve,so my question is what is the problem and what am i suppose to do? please help me.


Answer by msfan324
Submitted on 7/30/2006
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I have a 1995 Chevy Blazer purchased in 2006.  I initially had problems with my EGR valve.  But after replacing the valve and using the Tomco 2-1357 gasket with a screen on it I have had no further problems with rough idle or the SES light coming on.  If it does come on it will be cleared up in a day or two.


Answer by Toyota Tech
Submitted on 8/4/2006
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I highly recommend any auto dealership, if you want to pay %100 percent markup on parts and 3 book hours for 30 minutes of work. They're are a number of parts that can cause the same symptoms of the people above. If you want to clean your EGR valve make sure you have a gasket making kit to cut your own from, I recommend Advance Auto or Auto zone. you simply trace it on the sheet and cut it out. Don't forget to make any holes necessary. As for the cleaning, make sure not to soak any electrical parts, if you have electrical components you can soak it by suspending it over a bucket using a stick and a string. Don't use carb cleaner!!! It can cause premature failure and can also cause sticking by drying the lubricated joints that allow it to open and close. If you soak it you should soak it in Kerosene which can be purchased from Walmart. If you insist on using carb cleaner spray it with WD-40 afterwards.


Answer by jasmine
Submitted on 8/4/2006
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i have a 99 chevy and the codes come up with o2 sensor,and egr valve. i changed the o2 and the check engine light is still on man is it annoying. I changed my egr valve about 2 years ago and the light went off, but now another one is gonna cost 150.00 i hope this works.


Answer by Noah
Submitted on 8/13/2006
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My EGR valve is squeeking and seems to be loose.  I first noticed a few days ago when i was pulling into my driveway that my car stalled.  The next day i felt it putting along as i accelerated through town.  We just found the problem today and hopefully it wont be a big fix money wise.


Answer by Deb
Submitted on 8/15/2006
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I have a 1996 Pontiac Grand Am and the code says it is the EGR valve, bought one for $120 at Auto Zone and replaced it, light still on, same code.  Now I think the passage tube to the EGR valve needs cleaning but man, how in the World do you get to the screw at the bottom?  You can't clean it from the top.  Not sure, but I think this will cause it to fail inspection in Texas.


Answer by audi
Submitted on 8/22/2006
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i have a 96 audi a4 quattro, my check engine light came on, i took it for a diagnostic check and they told me it was my egr valve..is there a way to clean it or should i just buy a new one which will cost me like $500..what damage will this do to my car, and in how long will it start 2 damage my car can anyone help me out?


Answer by Rachel
Submitted on 8/28/2006
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My car is idling rough and when I put it in a gear  it jumps like it wants to go dead but it doesn't. I took it to Autozone and the man said that it was something wrong with my EGR Valve and that I had a misfire on 2 cylinders. He said that it was a very important problem and that I shouldn't drive it far. I'm going to get new spark plugs, wires, and a fuel filter today. I hope that this will help solve the problem. Do you think it will, or I need to get a EGR Valve?


Answer by damien
Submitted on 9/5/2006
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MIchael with the shaking taurus you should check the control arms and inter tie rod ends that was the problem in my 94 taurus


Answer by kir
Submitted on 9/16/2006
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My car (Honda Accord, 97 LX) engine check light is on since 10days, but car is running fine. they told me to replace EGR valve, it costs 500 bucks.
1.is it essential to replace with new, can i replce with used alos.
2.I feel the developemnt of suffacation (sort of breathing problem), is it beacuse of defaulty EGR Valve.
pl advise me waht to do?


Answer by skyhunter
Submitted on 10/9/2006
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is $330 a fair price for the dealer putting in a new egr valve in a 2002 volkswagen jetta TDI diesel?


Answer by Franz
Submitted on 10/12/2006
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I was just told that my EGR valve was acting up and it would cost #375.00 for a new one. I have a 98 Lumina. The mechanic said that I might be able to get a GM dealer to reprogram it!! No known cost!
Ant comments folks??


Answer by ruth
Submitted on 10/24/2006
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I have a 2001 Toyota Camary and my check engine light went on and I went to Autozone to check why did it go on.  They said that it was my ECG valve but when they where explaining it to me they where just confusing me more.  They where already trying to sell me the part that cost like 170.  I was wondering how can I check it to see that either it needs a cleaning or the whole valve needs to be repaired?


Answer by trasure chest
Submitted on 10/30/2006
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I have a prima 1986 cadillac sedan deville I was awarded out of a divorce.  It is the only means of transportation I have and it's engine light (service engine soon) light stays on and it is only getting 14 mpg.  My ex- tells me to get an egr valve and have it replaced and that will fix my car.  The car hesitates and shutters going down the road.  It sort of misses and acts like it's had some bad gas, but it is all the time.  I took it to a mechanic and he reconnected a major air hose and added some kind of spring.  Unfortunately I'm afraid he's just made it worse.  The ex is a mechanic and was supposed to fix it and buy the part as part of a divorce agreement. But suprise,.. suprise he can't be located.  So, will someone out there please help me find an EGR valve for my car at the very cheapest place and a little advice so I don't get ripped off?


Answer by 93cb7excoupe
Submitted on 10/31/2006
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i found this article very helpful! Thanks


Answer by Pete
Submitted on 11/12/2006
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Is there a gas additive  that might help in clearing/cleaning the EGR valve?  


Answer by TIM
Submitted on 11/22/2006
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Answer by ted hanna
Submitted on 12/13/2006
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168000 miles on my 1992 Lincoln Towncar [signiture] and on comes the check lite for the very first time!! hell, i thought it did'nt work all this time! The mechanic found the EGR code and pulled the egr but it looked ok. next ,he found the solenoid not working and  replaced it.  result- check light out! 50 miles down the road, check lite back on. Mechanic detaches little [5mm.dia.] tube and with engine running sticks spray can straw into the tube and holds a cloth around it in order to keep air being sucked in,it being in a vaccum. oh boy!check lite out!! next day check lite on. ok, at $150 initially and $20 a "sprayshot,I 'm asking, am i nuts???


Answer by pkempso
Submitted on 12/14/2006
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yeah my 96 tarus is doing the same thing as 2 above. but i also got a quote from auto zone for around 40 bucks. so you people with 100 dollar egrs need to shop around. after i replaced it the problem was fixed. i did the instal myself minimum difficulty level.


Answer by dj
Submitted on 12/15/2006
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egr valves are required to regulate the amount of exhaust being recirculated back in to the cylinder. this is because the amount of egr required depends upon the operating conditions of the engine. it is possible to repair the valve.


Answer by '00 Caravan 105k
Submitted on 12/18/2006
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'00 Caravan 105k
Drove on hway ok. On the exit ramp the engine shut off. I could start again, but very rough. Later mechanic replaced EGR valve for $200 (zip 11418)


Answer by chasfb7
Submitted on 1/1/2007
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The EGR Valve is closed at Idle and at Full Throttle! Open in between.

  Cleaning is cheap and easy and may help.

If you have Idle problems......it is probably open. Engine may stall.

  If you have galloping/surging at part throttle.....it is probably closed or varying
position due to sticky carbon or!

  If it is electronic.try disconnecting the electrical plug.

  If it is closed. engine will perform just fine although emmissions may not meet standards.

If it is vacuum controlled check for movement by pushing up on the diaphram from the bottom to check. check for vacuum hose leaks.

NOTE>>>>>>>>Vacuum leaks can really foul up idle etc. CHECK FOR LEAKS  if you have this egr problem.


Answer by Sarah
Submitted on 1/4/2007
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Ok tonight after grocery shopping my breaks all of a sudden started grinding, and when I stoped I couldn't move it sounded like my front drivers wheel wasn't spinning, after about 5 minutes I could go again. When I called my brother to ask he said it could be the EGR Valve. Now I just got new brakes, rotars, cv joint, ball joints, and a hub assembly, but after my brother put all that on there was a hissing sound comming from my car.  I own a 95 Ford Contour it's a V 6 and a manual.  Please help me someone!! E-mail me at Punkymonkey12369@aol.com.  Put in the subject box "your car".  Thank you!!


Answer by LilRacer
Submitted on 1/9/2007
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Please don't listen to some one who tells you that leaving the egr valve alone after it has gone bad won't hurt anything. If the egr valve is bad it will cause your car to run lean(too much or not enough gasoline to air mix)Leaving your car with that type of problem will just make you burn out cylinders, then your motor is basically junk.


Answer by Raju
Submitted on 1/11/2007
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why egr reduces the the temperature of combustion chamber?


Answer by Big Mike
Submitted on 1/15/2007
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Can anyone tell what does code P1515 refer to when my check engine light is on?


Answer by CHATA
Submitted on 1/24/2007
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Answer by Nicole
Submitted on 1/25/2007
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For those of you who think you can just leave it alone and forget about replacing it, my car is undriveable because of it.  I would think twice before deciding to ignore the problem.


Answer by grich133
Submitted on 2/9/2007
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ok ok my car constantly comes up with an egr code why would this be?am i always going to have to be cleaning it??


Answer by angie
Submitted on 2/12/2007
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How do i fix my egr valve on my chrysler town & country 2005 3.3 liter


Answer by jaye
Submitted on 2/16/2007
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I have a 99 Ultima with egr problems, so i decided to throw the car away and keep the oil


Answer by bob dimar
Submitted on 2/19/2007
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i'vehad this problem with my engine check light, went to the dealer said it was the egr valve which will cost $700. i have a 2000 camry. i bought one for $170. put it in the next day the check light came back on, should i take it off and try to clean it or what. please let me know, thanks


Answer by Luisa
Submitted on 2/28/2007
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I have a 95 toyota tercel. My check engine light went on so I got it diagnosed. They said that my EGR valve was working properly it just needed cleaning. They will charge me about $200 for the work. I tried cleaning it myself and the light went off but suddenly came back on. Is there anything else anyone can suggest before I take it to the mechanic. I really don't think it's necessary to spend $200 if it's something I can do myself.


Answer by Country
Submitted on 3/10/2007
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i got a 99 mazda 626 ! It needs an egr valve but it cost $400 installed all my car does is the exaust makes a bubbling sound when it changes gears in high RPM'S! Is this a problem ?


Answer by Ruby
Submitted on 3/18/2007
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Hi, I live in Georgia. I just went to Auto Zone and purchased a new EGR valve and installed it on a 97 Chevy Lumina, but the light did not go out.
What can I do?


Answer by matt
Submitted on 4/20/2007
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for those who are mechanically illiterate, how do you clean the EGR valve yourself? I.e., where is it located?


Answer by david burke
Submitted on 4/25/2007
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A good friend of mine has a 1997 Olds Delta 88 with a 3.8 V6 engine
Apparently one of the best 6 cylinder engines ever made by GM.
Her problem is this...After she has been driving the Olds for about 20 minutes oe so, the car all of a sudden quits! The engine shuts off and she quickly has to take the car over to the side of the road with manual steering.
A garage told her that the problem is a sensor in or under EGR Valve
Apparently when the aprt malfunctions, it leaves a history where by a garage computer can pick it up
can this sensor be fixed or replaced?
I appreciate you comments



Answer by freak show
Submitted on 5/3/2007
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I removed two bolts that attach my EGR valve to the engine, took a look at it and the valve part that was supposed to move wasn't moving. Upon closer inspection I noticed carbon built up around the movable valve part and was amking it stick, so I took a flat head screwdriver and scraped the carbon away that prevented the valve from moving. Problem solved, service engine light = gone.

This was on a 4.3 liter vortec v6 jimmy.


Answer by big 
Submitted on 5/26/2007
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i to got suck in by ford i have 2005 freestyle and my check engine light came on. so like most mechanically inclined people i brought it in to ford well 181.00 for the part and 195.00 for labor i now have a sick feeling that i just threw away all this money sure do wish i came to this site before i took my car in. thinking about writing to ford about my lost fortune


Answer by Browning69
Submitted on 6/11/2007
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I have a Toyota Camry 2000 with the same problem (EGR valve).  The replacment will cost more than 500 $.  I want to try to clean up this module, but where it is located ???  The dealer says that it required 1.5 hours to replace...  I suppose this piece is not really accessible (because it take much time).  Any ideas or suggestions ???


Answer by DANIEL
Submitted on 6/17/2007
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Answer by d-man
Submitted on 6/17/2007
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I have a 2001 chrysler sebring. I have a problem with the egr. Can someone tell me is that exspensive to fix??


Answer by miken
Submitted on 7/14/2007
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an EGR error is a common problem with newer cars, most of the above advice is good, soak it in some cleaner, get out the carbon build up, dont let any cleaner get on the electronics if it has any, use a wire brush where you can to clean it up.  To the guy near the top, warmer air in the cylinder may indeed help with emissions, but it certainly doesnt help with performance, why do u think superchargers and turbochargers work so well, they force cooler denser air into the combustion chamber.  More air with more fuel equals more bang for your buck.

Egr is just an emissions trick, no practical usage for performance.


Answer by big tony
Submitted on 7/16/2007
Rating: Not yet rated Rate this answer: Vote
haha replace fuel tank from ur eml bein on, robbin twats, most the time they just need cleanin


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