random low idle/stall problem - JeepForum.com
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post #1 of 17 Old 11-27-2006, 07:14 PM Thread Starter
ianb
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random low idle/stall problem

hey everyone im tring to figure out a problem with my moms 2000 cherokee 4.0..
every few days in the mourning when she starts up the jeep to go to work it idle lower than usual and when she puts it in drive it will stall out and she will end up having to gas it causually as she puts it into gear and eventually after the jeep is warmed up its fine?!?!..i cant figure it out
p.s.
it has about 80k on it and it has no check engine lights either

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post #2 of 17 Old 11-27-2006, 07:19 PM
88XJSport
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Those are the classic symptoms of a plugged up Idle Air Controler Motor. It controlls the air into the throttlebody at idle. It is the left (passenger) side of the throttlebody, and removing and cleaning the carbon from the pintle and throttlebody should help.
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post #3 of 17 Old 11-27-2006, 07:36 PM
sundevilkid
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I always have that problem after I've drained my battery. Make sure you've got 12v at the battery when the jeep is off and approx 14v when it's running.

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post #4 of 17 Old 11-27-2006, 07:48 PM Thread Starter
ianb
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i will check both thanks for the quick replys..i thought it might be a bad MAF but i soon realized that jeeps dont have one lol..didnt even think about a IAC thou
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post #5 of 17 Old 12-03-2006, 05:19 PM Thread Starter
ianb
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i pulled the throttle body and cleaned the entire thing and pulled the IAC which did have alot of crap on the pintle which i cleaned..so we shall see what happens tommorow mourning..thanks for your help
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post #6 of 17 Old 12-03-2006, 06:06 PM
xj BMX xj
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check fuel filter

92 Cherokee Trail toy. - 97 Cherokee Street toy.
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post #7 of 17 Old 12-04-2006, 04:23 AM Thread Starter
ianb
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hey everyone..its 6 amish and i just went to start it and its still doing it..one thing i checked the voltage when it was running yesterday after it was warmed up and at idle it was holding 13.5..i noticed this mournin it was slow to crank over and the volt gauge would drop and it would stall if i left trin to run without me leaving my foot on the pedal?!?!
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post #8 of 17 Old 12-04-2006, 02:18 PM
jeffasher1988
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i have the same problem and i cleaned my iac and fixed my timing still does not work.

1996 Cherokee XJ 2 Dr. Black. Auto. New Starter and NSS. Other then that its stock.
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post #9 of 17 Old 12-04-2006, 02:57 PM
lrsmithwhaley
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Try the fuel filter...might be a case of bad gas...not that I'm having the same issues caused by bad gas clogging my filter...now to find out if it took my pump also.

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post #10 of 17 Old 12-04-2006, 03:54 PM Thread Starter
ianb
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its just odd because sundevilkid said something about the battery and having the slow crank/low volts at idle..wondering if changed the battery or alternator would cure it..well scratch that one cause i know the alternator works because the volts went up when i would rev the engine..anyone thinking the battery may be the culprit??
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post #11 of 17 Old 12-06-2006, 08:08 PM Thread Starter
ianb
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anddddd new battery for the win...thanks guys for your help!
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post #12 of 17 Old 12-06-2006, 08:24 PM
jacks90xj
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Maybe you are looking for a big problem when it could be the cheap one that is right in front of you.......AIR FILTER! I am no genious but if that is clogged all to hell, enigine no run well.

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post #13 of 17 Old 12-08-2006, 10:16 AM
Rogo98Sport
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Quote:
Originally Posted by ianb
anddddd new battery for the win...thanks guys for your help!
So did changing the battery help??
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post #14 of 17 Old 12-08-2006, 05:50 PM Thread Starter
ianb
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yesss sir it did
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post #15 of 17 Old 12-08-2006, 06:13 PM
Goldenknob
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hmmm that's interesting.. I've noticed that my jeep is cranking slowly since it's gotten cold.. not sure how old my battery is because it dosn't have any markings on it. it's just a plain black battery. OEM maybe? on a 92'? hard to believe. I'll look into a new one, maybe that will help my cold start hesitation also.
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