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my 1989 jeep cherokee with the inline six cyl.is hard to...

<< Back to: rec.autos.makers.chrysler FAQ, Part 1/6

Question by jim steffen
Submitted on 10/18/2003
Related FAQ: rec.autos.makers.chrysler FAQ, Part 1/6
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my 1989 jeep cherokee with the inline six cyl.is hard to start.when cold i have to use starting fluid and alot of it.i changed the filter out of the tank and had the same problem. which made me think that there might be 2 filters one closer to the engine or somewhere.i cant see it is all i know.any assitance is very much appreciated,thanks for everything ahead of time

Answer by mike
Submitted on 11/30/2003
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I know that in a 1995 jeep cherokee there is a fuel filer in the area above the rear axle.  It is the tube or canister type with an inlet and outlet.  This might not apply to a 1989 though.


Answer by dean
Submitted on 1/1/2004
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Sounds like possibly a more serious problem, lack of fuel delivery almost always shows itself at higher engine rpm when fuel demand is high. Best case scenario your electric choke is not working but those symptoms are typical of low cylinder compression, probably a high milage motor around 200k?
If you have not already check your plugs and run a compression test,below 125 psi becomes a starting problem.
Let me know at dft@deantalkington.com
best of luck


Answer by snagger
Submitted on 1/25/2004
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yes there is two gas  filters one is under the frame drivers side by the rear tire the other is under the hood on the line that goes in the carb.    does it start hard when its warm???


Answer by shaun
Submitted on 2/9/2004
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The exact same think happened to my 1989 jeep and I got all new fuel injectors(which wasnt cheap) and a new fuel pump and new fuel filters and now it starts up like a champ.


Answer by richard
Submitted on 2/12/2004
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I have an 1988 jeep comanche, the engine turns over but there is no fire coming from the coil. Recently, I changed the disburtor, the coil pak ,spark plugs, with new wires, and new battery.Which all got it to run for a few months now it doing it again, what can I do now to get it running again.


Answer by brokedown
Submitted on 2/23/2004
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i had a similiar problem with my jeep. i tried everything thinkable, until i discovered it was the coolant temperature sending unit. it's about a $20 part and is easy to change.


Answer by matt c
Submitted on 5/3/2004
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no offense, but you need to junk the chrysler and buy a chevy lmao


Answer by Randy
Submitted on 6/21/2004
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This is to Richard. Try checking the crankshaft position sensor. It is located on the bell-housing top left. I had the same problem and 4 sensors later, I am finding out it might be the computer that is causing the problem. Not enough amperage to the sensor which requires 5 volts and it is putting out 3.


Answer by jeepcherokeeman
Submitted on 6/28/2004
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im alos having a problem cranking my 89 jeep cherokee  i called the jeep dealership and they told me that it couldnt be the coolant sensor any thing else


Answer by G-man1977
Submitted on 7/11/2004
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Do you know who makes a  aftermarket Cam and Crankshaft  for a 1989 jeep 6cyl -Fi .


Answer by Silver_Cherokee
Submitted on 7/13/2004
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Richard, I have the same problem with my '88 Laredo. Solution was the Intake & Exhaust gaskets had to be changed out. My Jeep would crank over forever, starter fluid was a good help. On Hot days it was worse. Cold days it seemed to be ok... now that both gaskets were changed out ($29.99 Canadian for Felpro). it starts with no problem... Hell of a long job to switch them out though.


Answer by jcamin
Submitted on 8/18/2004
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I've been having similar problems with my 88, but in my case spark was there and no fuel.  Turned out the wire going to the fuel relay was broken off way down in the wiring harness.  If you guys ever see less than the required voltage (like 3 when you should see 5 or 12), this could easily explain your problem.  Try wiggling all the wire harnesses and see if that changes the voltage.  If it does, safe bet a wires come loose.  


Answer by Jess
Submitted on 9/2/2004
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i have an 89 jeep cherokee and it will start and rape up to 2k and and die. i don't no what the problem is any ideas


Answer by B3n
Submitted on 9/13/2004
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Ive got an 89 commanche el, i believe the hydarulic clutch has a leak in the slave or master cyclinder, where in the flying **** are these 2 bastards and how much do they cost to replace?


Answer by Doofy
Submitted on 9/24/2004
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richard ok i have a 1989 jeep cheokee and had tyhe same problem with you are haveing check the Cam positioning sensor on the top of the tranny. That is what my problem was


Answer by c0pe
Submitted on 12/8/2004
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I am having the same problem with my 88' jeep Cherokee. Bad when it's cold, better in warm weather. Takes forever to start but runs like a champ once you get it started.


Answer by Jaime
Submitted on 1/6/2005
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Well get that guy that said to get a chevy out of here ive pulled out many STUCK chevy trucks that cant handle offroading. Anyways you can try to replace the Crankshaft Position Sensor and the Fuel filters Ive got a 90 cherokee and i had to replace that. You might also want to try to get new dist. cap and wires. And maybe a new ignition coil. On that year cherokee the most prevalent problem with hard starting is the cps.


Answer by jeepdope
Submitted on 3/25/2005
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I was wondering if anyone knew if the in-line 6 from an 89 cherokee, is the same thing as the one in the cj8s'??? if so, how do all feel about this engine??? i was hoping to rebuild the engine and drop it in a cj8....?.


Answer by hnm
Submitted on 4/1/2005
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im having the same problem on my 99 grand cherokee its real hard to start when its cold but it runs fine after that. could someone help me please.


Answer by anniepooh30
Submitted on 4/20/2005
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I have an 89 Jeep Cherokee that will not run. Could someone send me a diagram on where the bell housing for the crankshaft sensor? Thanks. Email is anniepooh30@yahoo.com


Answer by jeep man
Submitted on 5/10/2005
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check to make sure that you gas line isn't frozen because it would make it hard to get gas to run it. or maybe you have a sensor that is going and doesn't like the cold


Answer by Psycho Pete
Submitted on 5/27/2005
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I own a 89 jeep cherokee with a 4.0L in-line 6.  I've been through allot with it.
If it only runs well at high RPM and then is slugish at low RPM's runs at full throttle then check the fuel pump pressure and regulator.  Chances are it's sucking fuel in when it's wide open - yes believe it or not!
If it's not getting spark at all or runs and then cuts out for no apparent reason when warm without spark and then starts when it's cold again- crank shaft sensor.


Answer by Jeepmad
Submitted on 7/23/2005
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Try the timming. this is most often a cold start does not work.I sudjest you also use the standard spark plug and NOT the platinum.


Answer by angelo
Submitted on 8/12/2005
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Try checking you battery cold cracking amps. The jeep battery is a 750cca I believe.
I had the same problem in my 99 grand Cherokee and that was the cure.


Answer by jay
Submitted on 11/2/2005
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i need to know where my fule pump is in my 1988 jeep cherokee


Answer by m.buckley
Submitted on 11/18/2005
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I have the same problem with starting If i jump my 89 jeep it will start or turn the key fast and turn it full it will start up I changed the cap and rotor ign module coil battery spark plugs same thing happens it will turn over and over but won't start only when it wants too I'm think of going to the junk yard and getting a computer for it. any have a solution      


Answer by cherokeeng
Submitted on 11/18/2005
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I have an 89 Cherokee Laredo inline 6 and i was driving down the road and my stereo turns off, then, my truck dies, ive had this problem before because of a p.o.s. battery, and i will mess with post and cable connections and it will start back up, but this time it doesn't, i take a battery out of v-8 air conditioned plymouth fury and put that in and still nothing ,i have tried all the obvious, jump start, nuetral start,checked my ground and power wire, but my lights will come on, but my power windows will not move, also i have an alarm with a mind of its own, i don't have the clicker for it so i usually just unplug the harness from the module then turn my ignition forward then proceed to re-engage the alarm and it will start up, but when i put the new battery in the alarm decided it wasn't going to go off anymore, so im thinking its the alarm because it does have an starter kill on it, but my question is, is it the alarm? the battery just doesn't have enough amp power, or something else???


Answer by King
Submitted on 12/1/2005
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QUESTION: My 1989 Jeep Cherokee with a straight 6 runs fine. But its very hard to start. It cranks and cranks and cranks until it starts. Sometimes the battery wears out before it starts. I put in new plugs, filter, coolant sensor, and o-rings on the injectors. Yet, the problem persists. Any ideas???


Answer by tronhead
Submitted on 12/2/2005
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Same problem with a 01 Cherokee.  It's the fuel regulator.  It doesn't pump enough gas to start the engine.  Key the ignition twice before cranking, it then starts right up.  Chrysler makes an after market kit to fix this, but you need to drop the tank to install.


Answer by 88jeep
Submitted on 1/5/2006
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i have an 88' cherokee with an air leak and i used a hanes manual for the diagram but it didn't help me any can anyone help


Answer by se7vn
Submitted on 1/17/2006
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I have a jeep cherokee laredo 1989, changed the computer, new cat. . It has progressively gotten harder and harder to start, and now after a long drive to cali. it decided it doesn't want to start at all. When I turn the key to start it, all goes well ignition works fine, but when the engine starts, the rpm's go up to about 1500 then drop off immediately and the jeep stalls. It does not start, I thought it was the computer, but I was wrong. Any Ideas? I smell fumes from the engine, and a lot of moisture comming from the tail pipe..........


Answer by chevyssuckballs
Submitted on 1/17/2006
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try the wireing if not anything else but my chevy was a piece and got a jeep in 1989 an has now 346890miles and about 11000 which are offroading all over the country


Answer by dust
Submitted on 1/31/2006
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i have a 1989 jeep also. i would try starting it one day and the thing wouldnt even crank over. this is when i was worried.  I tried again and still not even a cranking.  2 days later i tried and i started right up (like 2 seconds).  this keeps going on and off like this and i dont know what the problem is.  could it be my starter? or what... thanks alot.


Answer by Cameano
Submitted on 2/16/2006
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I just recently had hard start problems, which became a no-start problem last week.  Went to check the crankshaft position sensor, and found that someone had routed it over the engine to body ground strap, where it had rubbed through, and was grounding out.  Taped it up, re-routed it to prevent this from happening again, and it fired right up.  


Answer by Matt
Submitted on 2/19/2006
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Try checking the ignition control module, I had an 89 and stalled it in a river, after everything dried it still wouldn't start so I replaced the ignition coil, and wham, it ran great and the rpm'sdidn't even stall during idle...which usually killed the engine.


Answer by LostNVegas
Submitted on 4/18/2006
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I have a 1988 Jeep Cherokee with the inline six and I just finished replacing the clutch and when I went to start it there is no spark at all. I have read that the crank sensor and the coolant temp sending unit might do this, is that true? I have tried testing the coil but am having trouble understanding the testing procedure from the book and really don't want to start replacing things as that can get expensive as we all know. I appreciate any help. Thanks.


Answer by edward brannon
Submitted on 5/6/2006
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the comanche is an amc! So the chevy man can keep hi junk!!!!


Answer by longaxx
Submitted on 6/19/2006
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i'mhaving the same problem. the only thing is it will run for about 25 minutes and shut off. then, it wont start up for about 20 minutes. i'vechanged the pick-up coil,checked the fuel pressure, and gotten a new ignition coil. what the hell else?


Answer by Jeep24/7
Submitted on 9/15/2006
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I have a 1989 Jeep Cherokee. We are trying to replace the Crankshaft Sensor without having to take it to a shop. Is there a way to do this without dropping the tranny? Or what do we have to do to get the old sensor out and the new one in?


Answer by Gooser
Submitted on 9/20/2006
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My 1989 needs to be kicked under the dash in order to start...NO Lie!  There is a box hung off the steering column that, when kicked, allows it to start right up.  No kick and sometimes it will start, but only rarely.  The problem is worse when it is really damp out, but it is always a problem no matter the weather.  It has been like this for nearly a year now and I drive it daily.


Answer by jeep rider
Submitted on 10/2/2006
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find a good mechanic who has hands on experience with american cars.  I have taken my 89 jeep cherokee to every mechanic, each one leaves something still broken, I finally found a person who can work on cars. I left it there for them to tinker with, and now it runs great..


Answer by wisehoss
Submitted on 10/2/2006
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i have a 88 lerado also the same prob no fire to coil changing a sensors and dist i will keep update when finished


Answer by grayjeep
Submitted on 10/13/2006
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I have an '89 cherokee pioneer,  I bought it a year ago.  It wouldn't run with the map sensor pluged in. we checked the voltage and changed the sensor. it still isn't working.what else do i need to check?


Answer by andy
Submitted on 11/28/2006
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i just fixed a similiar problem. it was a cracked fuel line in the gas tank. all that was need was a rubber hose and c clamp to fix it.


Answer by spazzed all out
Submitted on 12/1/2006
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got spark but spark stops now and again on plugs 5 3 and 6 or gets really weak does not start need help


Answer by Joe
Submitted on 1/9/2007
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For cold hard starting it might be an intake gasket. After the engine starts, but before it warms up, spray some more of the ether (starting spray) around the intake gasket. If the RPM's go up you have found the leak. WD-40 is also good to use, same effect, pinpoint nozzle.


Answer by 89 jeep
Submitted on 2/5/2007
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Where is the coolant sensor ? 89 jeep 4.0 Cherokee ?


Answer by parkerlarry1
Submitted on 4/6/2007
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Jeep won t start?  Try the main firewall/engine side [talking 4.0L 6 cyl engine] connection block tightend down with the odd 6.5 mm bolt. After pulling that dielectric greased major connector apart6 and repluging it in my jeep 1988 starts well/never misses.  Thats after a 4 hour investigation of potential causes on google shearch mode...55 and been changing my oil, ect since 16 [shade tree]. Jeeps Been kept out doors, North California, for decades. But snow, Trinity County, and moisture effect the final blow. Light corrosion on one of 25 plus spade connectors. Its a cheap fix/try it...


Answer by josh
Submitted on 4/17/2007
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I've got an 89 Cherokee with a straight6 and it starts just fine, and it has over 215k miles on it.  Sounds like you got a problem greater than just the old six cylinder.


Answer by Mike
Submitted on 4/23/2007
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hey i don't know how to work this site yet, but i have a question in the answer section. i have a 1990 Jeep Cherokee, and for some reason i can turn it over, but it won't fire. It will fire for a few seconds if i put a touch of gas in the intake, but it won't keep running. could it be that my fuel pump is dead or fuel filter is clogged? someone please help.


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