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Jeep Grand Cherokee Electrical Problems

707 messages,  Last post on May 15, 2013 at 12:06 PM

You are in the Jeep Cherokee and Jeep Grand Cherokee Forum.

What is this discussion about? Jeep Grand Cherokee, Electrical, SUV

Messages Page 57 of 71

#559 of 707 Re: 1996 jeep grand cherokee electrical trouble [jrmcarthur] by melbistylz

Oct 22, 2011 (3:46 pm)

Replying to: jrmcarthur (Oct 22, 2011 5:32 am)
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 707 Re: Interior lights stay on. [barryz] by mmaniac

Oct 23, 2011 (12:11 pm)

Replying to: barryz (Sep 13, 2010 5:51 pm)
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.

#561 of 707 Re: 2005 Jeep Grand Cherokee Laredo-a crappy Chrysler product! [architectkmp] by agreen74

Oct 24, 2011 (5:56 pm)

Replying to: architectkmp (Oct 08, 2011 2:23 pm)
Thanks.
 
I had the Transmission Control Module replaced at a Jeep Dealership to correct the slipping issue.
 
As for the lights flickering issue, I had the Jeep Dealer also replace the multi switch (the turn signal/lights control) and that did the trick...you can tell the difference in how firm the new switch is compared to how loose the old one felt.
 
One last note to anyone trying to fix anything on their own...make sure you buy original Chrysler/Jeep parts versus anything from AutoZone or a place like that. According to my mechanic, Jeep products don't do well with any parts that are not original Jeep.
 
Good luck!

#562 of 707 Re: Jeep Stalling [mech3] by melbistylz

Oct 25, 2011 (2:53 am)

Replying to: mech3 (Jul 25, 2011 10:06 am)
I too am also a female, if you put the key in the ignition and turn it forward ( don't start it) just to the on position then off three times within 5 sec. So turn forward, back, forward, back, forward, back. The check engine light will flash and the odometer will show some numbers. Write the numbers down the last number being 55. End of codes. Then google it on your computer: "jeep Cherokee Error codes (numbers) and you will find there are tons of websites that have the codes listed. Then you will know what the problem is. But the PCM is located under the hood, passenger side on the other side of the glovebox.

#563 of 707 1996 Jeep Grand Cherokee doing all kinds of wierd electrical stuff. by aboutmyjeep

Nov 01, 2011 (2:38 am)

My 1996 Jeep Grand Cherokee was running fine, then one morning while taking my kiddos to school the speedometer started going crazy, bouncing all over the place. A few minutes into this the rest of the gauges started to do the same thing and it started to idle really weird like I was running out of gas, but there was still half a tank left. I did notice that the volts were reading half of what they usually do. I tested the alternator and battery, both are fine. My local dealer hasn't a clue what it could be. Can anyone please help me as to what this could be? The snow is coming soon and I have been without a vehicle for 2 months. Any suggestions would be great. Thanks for your time and Jeep wisdom!

#564 of 707 Turn signal issues. by sorterguru1

Nov 01, 2011 (9:47 am)

A strange problem poped up with my 2001 Grand Cherokee. About 3 weeks ago the left turn signal stopped working. I thought that I would check the bulbs that weekend, but I forgot about it and a few days later I noticed that it was working. Now it will stop working and the next time I drive it, or later on the same trip but sooner or later it will start working. I can not pinpoint anything that I can think may be causing this. Has anyone else seen anything like this?????? Thanks for you help. Jerry.

#565 of 707 Re: Turn signal issues. [sorterguru1] by tuggajb

Nov 01, 2011 (10:41 am)

Replying to: sorterguru1 (Nov 01, 2011 9:47 am)
replace bulb holders in tail light they go bad bout 10 bucks each

#566 of 707 Re: electrical problem [rwfanatic] by tvguy666

Nov 01, 2011 (9:02 pm)

Replying to: rwfanatic (Sep 22, 2009 4:06 pm)
I know you posted this a long time ago but I just wanted to let you know how much it's helped me... I had the EXACT same problem. I was happy to read how simple it was to reset the system. Just unplug the ground, wait a minute, then reconnect. Everything's fine now.
 
Now all that's left to do is change the heater core, Blend doors and Hydraulic radiator fans' solenoid and my 2002 G.C. will be like new :~1 Guess that's why Jeeps acronym is Just Empty Every Pocket.
 
Thanks again!
 
Rob

#567 of 707 Re: 1996 Jeep Grand Cherokee doing all kinds of wierd electrical stuff. [aboutmyjeep] by sillababe41

Nov 01, 2011 (10:52 pm)

Replying to: aboutmyjeep (Nov 01, 2011 2:38 am)
I have a 1996 Jeep Grand Cherokee and would do a slipping thing, the gauge would go up and it was like a stand still, then it would reengage itself. I thought I was out of gas like 3 times and had it towed the last time, cuz it was just chugging and wouldn't drive. It was a simple wire on the Throttle Position Sensor, the wires were exposed/split open. You could either need the wire replace or the TPS replaced or both. Jeep has been running fine now. TPS is the brains to telling your vehicle how much airflow, and fuel delivery to your computer of your vehicle.When its defective, it causes intermittant burst of fuel from the injectors and an unstable idle because the PCM thinks the throttle is moving. So it is a very important part. Its located right under the throttle body at the end of the shaft right on top of your engine. It can affect your gas mileage and how your vehicle runs. The wire is like $5 and if you do need to replace the TPS its about $35, plus labor. Shouldn't take longer than 20-30 minutes to do. Good luck!

#568 of 707 2005 Jeep Grand Cherokee Module Problems by lttd

Nov 04, 2011 (5:13 pm)

Hello I hope this post may help some people if they are having the same problem with their Jeep. A family member owns a 2005 Jeep Grand Cherokee 3.7 V6. The Jeep was bought brand new and she never had any major issues with it. The vehicle was well taken care of and it only has 73,000 miles on it.
 
 On May 9, 2011 there was a problem with the dashboard and tail lights going out. You would be driving and all of a sudden everything on the dashboard would go dead, rear tail lights would go out, but the vehicle would still run fine. She shut the vehicle off, went to restart it and everything would come back on as if nothing happened. It was brought up to the dealership and had to be left there for two weeks.
 
No error codes were found on the computer, and the instrument cluster was replaced which seemed to fix the problem. The Jeep had two incidents where the dash went out again and it was brought back up and checked. There was a loose connection in the wiring which was fixed and the vehicle was fine. The total cost for the repair was $943.22. I could not believe the cost and this is why I hate new cars with extra electronic devices that I feel are not needed. It is so much cheaper to fix my 1975 CJ5 which runs great, lol.
 
Back to the 2005 Jeep Grand Cherokee, in the month of Aug the check engine light would come on and off. Which happened a few random times but the vehicle ran fine and everything worked or so we thought.
 
The last week of Oct my family member went out to do some shopping and all of a sudden on the dashboard all the brackets on the gears were on as if the vehicle had all gears engaged but the vehicle was in drive. Also the check engine light was on too. When it happened the vehicle went into a low gear and was dragging. She pulled over shut the Jeep off and turned it back on. Everything came back on and seemed to be okay and she made it home. We turned the Jeep back on once again all the brackets on the dashboard were on the gears even though the vehicle was in park and the check engine light was also on. I noticed the brackets were flashing on and off. So we called a friend who repairs older Jeeps and asked if we could bring it up. I drove the Jeep everything was fine. I stopped at a red light when the brackets came on and the vehicle went into a low gear. I pulled over and tried to restart it until it would go off. I got lucky and made it up to his private shop. These are the codes that came up on his computer.
 
#1 P0700 Trans Control Sys Malfunction
#2 0404 Invalid Data Recovered From Control Module Gear Shift
Note: P0700 Came up twice
 
He said you have to take it up where they have the computer to put it on. Also sometimes the codes are not saved on the system in your vehicle or it might take several times for the computer to save it. So I made my way home and we had the vehicled towed to the dealership. I t was unsafe to drive and we did not want to ruin the 4x4 or transmission.
 
On Nov 2, 2011 the vichle went up for repair and on Nov 4, 2011 it was fixed. They replaced the PRNDL/ESM Module and so far today the vehicle has been okay. The repair cost $1,199.66. I really hope that the Jeep is fixed and we do not have any more issues. The computers and repairs are so expensive and can be a nightmare. I dislike having a computer decide if my 4x4 should be on or not. That should be up to the driver to engage because what do you do if the computer malfunctions and you can't shut it off? I hope this helps and if anyone has had the same problem please let me know.

Messages Page 57 of 71

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