I have a 93 4.3 EFI chevy s10 blazer, it stalled the other...

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Question by crank
Submitted on 5/31/2004
Related FAQ: rec.autos.makers.chrysler FAQ, Part 1/6
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I have a 93 4.3 EFI chevy s10 blazer, it stalled the other day, then restarted fine a few minutes later. An hour later I started it up to go out and it idled very rough, then died. It smoked badly out the exhaust and left carbon on the ground. It starts fine then sputters and dies like it's choking, it's always been maintained extremely well, what causes this. The fuel injectors work fine, the pcv valve is replaced.

Answer by brian
Submitted on 8/22/2004
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map sensor needs to be replaced

Answer by Ben
Submitted on 8/30/2004
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Check the distributor cap and rotor one might be bad

Answer by ben
Submitted on 9/22/2004
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the EGR valve is sticking open or shut.

Answer by jay
Submitted on 10/9/2004
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change the ignition mod in dist?

Answer by kyle
Submitted on 10/25/2004
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AH HA! i hve the same engine in my 89 with EFI! what it was was my fuel pump. it would idle real bad, and die, then start up later. it csy me $209 with labor. NMSK8R9187@aol.com

Answer by Patric7378
Submitted on 11/5/2004
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sounds like the central port injector

Answer by BGBASSMAN40@EARTHLINK.NET
Submitted on 12/24/2004
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IT DEPENDS ON WITCH 4.3 YOU HAVE IF IT IS (w) engine code 99% chance you have a bad egr valve stuck open.if it is a (z) engine code and or 5 speed it could be the tps sensor and or fuel pressure regulator.

Answer by bri
Submitted on 1/4/2005
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electronic control mod. under distribitor cap

Answer by gil
Submitted on 1/10/2005
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you might want to see if your engine ground is loose, I had that same problem on my blazer, when it is loose like that your engines tends to act strange and it seems like you have a big problem when sometimes all it is, is your ground wire, if not that change all your fluids to see if that helps and get a timing light to see if your timing belts are on sync.

Answer by Shannon T.
Submitted on 1/17/2005
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What color is the smoke? 1st thing i would check would be computer code list. If no codes check for m.a.p. sensor either unplugged or inop. You never mentioned if was cpi or tbi. Make sure you are not making oil, i.e. check for fuel in the oil. Possible broken fuel pressure regulator.? Check for cat. plugage.

Answer by d
Submitted on 3/1/2005
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map sensor

Answer by bigblocktech
Submitted on 3/1/2005
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I've got a 1989 S-10 with a Z code engine (the eighth digit in the VIN code), and it has a similar problem. I've turned wrenches for a long time professionally, and although I have not had time to fix it yet, I am pretty sure that the IAC valve is dirty, which can cause it to stick. IAC stands for idle air control, which is exactly what it does. It controls the amount of air allowed to bypass the throttle blade when the engine is idling. Try cleaning the air passage with some throttle body cleaner. You may have to remove the valve to clean it properly, and you may just want to replace it. Hope this helps, Robert.

Answer by jimmy
Submitted on 3/7/2005
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carbon build up on the valves causes the carbon on the ground and the smoking

Answer by reddawgg
Submitted on 5/11/2005
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cut off the cat converter thats the problem

Answer by RON
Submitted on 2/4/2006
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YOU PROBLEM IS A FAULTY OR CARBON PLUGGED EGR VALVE JUST HAD THE SAME THING HAPPEN TO MINE

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Answer by bub
Submitted on 5/27/2005
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check the egr valve

Answer by blazer dude
Submitted on 9/10/2005
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hey you need to clean your egr valve carbon chunks clog the egr pintle and the engine runs rough or not at all

Answer by jameswest
Submitted on 10/3/2005
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yeah i had the same problem with my 93 it was the o2 sensor the first time.the second time it was the EGR valve,this was the expensive one

Answer by griff
Submitted on 1/12/2006
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mine did that to its the EGR valve it when you engine is running at its best it creates this smog like what you see behind drag cars or airplanes so they put this egr valve on there to let exhaust back in the air intake i bet you EGr valve is stuck open

Answer by Hammer
Submitted on 1/20/2006
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Sounds like NO I'm am pretty sure your spider is leaking into the intake

Answer by Jimmyug
Submitted on 3/6/2006
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My truck has the same problem but its a 94. I changed my spark plugs and fuel filter and thats not the problem either..if you figure out what it is please let me know..thanks

Answer by Darrell
Submitted on 10/22/2006
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If you have not done so check or replace the e.g.r valve it may have carbon build up in it you may be able to just clean it.

Answer by otto
Submitted on 2/14/2007
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check the distributor module...my camaro did about the same thing ...there a different engine but worth a shot..