Last post on Nov 07, 2013 at 9:41 PM
You are in the Jeep Cherokee and Jeep Grand Cherokee
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Jeep Grand Cherokee, Electrical, SUV
#551 of 735 2001 grand cherokee larado pcm failure
Oct 08, 2011 (3:13 pm)
bear with me, bought my jeep new in 01, this year at 130,000 miles, replaced trani with new, fuel filler pipe, brakes, (always with the brakes) fuel line, muffler, rear end, have always maintained perfectly, now my pcm is gone, have been in contact with chrysler for three weeks, ordered part, they have no idea when delivery, hundreds on back order, even after market are on back order, apparently, according to dealership(s), the 2001 jeep grand cherokee is the only one (4.0) that is vin specific, can't reprogram a used one, and chrylser dealers have none, they are saying 6 months to a year, meanwhile, I have no car....this is my third jeep, all have gone 250,000 with good routine mileage, I can't get to work, etc....their answer, buy a new one, WHY!!!! for want of a $700 part, I would have a great car, no damage, rust, I have been meticulous with this car, and yet chrysler has no part for only this year/engine... why was there no recall, should a class action be started.... my jeep is a very expensive planter...I have put $8000.00 into it since June.... what the heck can I do...HELP!
#552 of 735 Intermittent turn signal operation
Oct 16, 2011 (9:00 am)
Has anyone seen this? I have a 2001 Grand Cherokee limited and about 3 weeks ago I noticed the left turn signal was not working. I parked and forgot about it. The next few days I saw that it was working???? It has quit about 3 or 4 times since but always works the next day. I plan to change both the front and rear turn signal lamps but any ideas after that???
#553 of 735 Re: 2000 Grand Cherokee Ltd. Update [bee007]
Oct 19, 2011 (8:45 am)
I am havin the same exact problem to a tee with mine. we have spent thousands trying to figure this out. mine is throwing a 1686 code, all the warning lights are lit, gauges dont work, and the electric windows only work when the car is in the accessory position, but not when the car is running..did you ever find out what the issue is or whats bad????
#554 of 735 Re: 2000 Grand Cherokee Ltd. Update [hpalmatier]
Oct 19, 2011 (12:51 pm)
did you ever replace the ignition switch?
#555 of 735 Re: 1996 jeep grand cherokee electrical trouble [larchave]
Oct 20, 2011 (12:54 am)
The problem is the PCM. Thee two screws are grounding the motherboard. Replace the 3 bolts with plastic ones and keep the PCM away from the firewall. The PCM is sending the wrong signals to your sensors that's why your having problems. Next your car will be backfiring.
#556 of 735 Re: 2000 Grand Cherokee Ltd. Update [tuggajb]
Oct 20, 2011 (9:36 am)
going to try the ignition switch today. should know by tonight if that fixes the problems.
#557 of 735 Re: 2000 Grand Cherokee Ltd. Update [hpalmatier]
Oct 21, 2011 (12:12 pm)
tried the ignition switch, still having all the same problems..anymore ideas???
#558 of 735 Re: 1996 jeep grand cherokee electrical trouble [melbistylz]
Oct 22, 2011 (4:32 am)
To melbistylz, regarding the PCM. I originally posted with a intermittent, now fulltime issue with the remote door lock and gradual loss of speakers in the stereo system. I had done some research in the Jeep shop manual and suspected that the PCM was the culprit for both issues. Both the remote lock/ unlock system .and the stereo speaker wires seem to be run through the PCM. Can you respond to my suspicion and offer a solution if possible? If you need more info, please let me know. Your thoughts would be much appreciated. I can give you my email in required. Thanks!
#559 of 735 Re: 1996 jeep grand cherokee electrical trouble [jrmcarthur]
Oct 22, 2011 (2:46 pm)
There are two small screws in front of the PCM. Remove them. They are located under the 3 PCM harnesses. Also on the bolts that gold the PCM to the firewall there's one on the right side and two on the left. Remove the bottom left. Then take an old shirt and stuff it behind the PCM to prevent it from grounding out to the firewall.
This is how far I went. After expieriencing the same electrical issues, my crank position sensor went bad all of the sudden. Then the interior lights wouldn't go off. Eventually the car backfired blew my muffler round as a balloon. I was replacing everything including the ignition switch that locked up. Distributer, roter, basically bandages, then being the computer geeket that I am figured that the PCM is sending the wrong signals. I checked the PCM and noticed that the front cover is actually the MOTHERBOARD!!! Wow even I know this should be protected by a copper box or something. Well after removing the two torque screws I turned the PCM upside down and my car started stronger and I noticed that I actually get better gas milage. Does any of this make sence? I'm kinda replying fast so I don't have time to proofread my reply.... If you need a pic let me know.
#560 of 735 Re: Interior lights stay on. [barryz]
Oct 23, 2011 (11:11 am)
I know your post is over a year old but I had the same exact problem. It is a bad sensor at the door keyhole. I only have a keyhole on the driver's side. Take the door panel off and you will see wires going up to the keyhole, simply unplug it from the harness, PROBLEM SOLVED! The only downside to this is you can no longer disarm your alarm with the key, you MUST use your remote to disarm. The bad sensor was telling the car the key was there to get in, it would turn the interior lights on and disarm your alarm. Hope this helps anyone else who may be having this problem.