Question about 1997 Jeep Grand Cherokee

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Where is the pcm on 1997 jeep grand cherokee 6 cyl?

Jeep GC 1997 6cyl. stalls while at a low idle or while driving....starts up later when engine is cool. Could be the pcm? where is this located.

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  • yadayada
    yadayada May 11, 2010

    have u tested the system for trouble codes? the PCM is the last thing that would cause this problem.

  • Anonymous Mar 18, 2014

    I have a 97 jeep cherokee and i need to get a pcm

    I'm looking for one at the junkyard but they have none for a 97 so do any from 96-2001 interchange like maby 96 or 98

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  • 7 Answers

I don't think the PCM is your problem, is the check engine light on? It could be you idle air control motor this is located on the throttle body, but because this happens while driving I am thinking you will need to replace your crank shaft position sensor it is located on the transmissinon bell housing it is very hard to replace without the correct tools. If the check engine light is on take it to a local auto parts store and ask if they can check the check engine codes for you they usally will do this for free.

Posted on Jun 03, 2009

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1 Answer

Hello, I'm looking for a replacement for my jeep cherokee 99, the current part number is Chysler P56041 629AD, I found a Chysler P56041 278AD, can this computer works ok with my cherokee?


THE PCM MODULE.
no country stated, the 728ad shows Europe. (why?)
"I found"

where, at ebay, at pick-apart, or ?
USA cars have 11 PCM for one engine. fact.
and 100s more world wide.
what a question, just a p/n
then you post to grand Cherokee and then text leaving out Grand.?
why?
i searched the part at jeep and is wrangle part, 629ad.

you do know that it must be reprogrammed to your car right:?
the pcms on cars can vary
by engine, trans opted , 4wd/2wd,and year.
federal PCM
Calif PCM
and mexico PCM
and 9 more. just for 1999

is yours 42RE for 45RFE?? tranny??? 30/32 RH? what?
post county (or state if calif)
post engine and year
post body and not contradict.?
post drive line, in car, tranny and if 4wd?
then we can match it up
or call jeep.com

they (jeep) will do this magical thing!
ask you the VIN.
and then look it up in their database.
and see ALL THE ABOVE even what radio is in it. of 5.
me, im a glass half full guy (hard knocks, reality stuff)
id not even believe the part in car is correct.
im too SAVVY !
i find out from jeep what it should have first.

not one matches the 4.0L in the GC.


the 629 posted shows this at jeep.com

JEEP WRANGLER 2.5L Power Tech I-4 Cyl., 3-Spd. Automatic 30RH 1998
JEEP WRANGLER 2.5L Power Tech I-4 Cyl., 5-Speed Manual 1998
JEEP WRANGLER 4.0L I6 Power Tech, 3-Spd. Automatic 32RH 1998
JEEP WRANGLER 4.0L I6 Power Tech, 5-Speed Manual 1998
(if true needs to be programmed to each)

the send number
56041 278AD

lands at.
(part not found, is this a non usa part?) im stumped

was fun to try.
but im stumped.

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1 Answer

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