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Jeep Grand Cherokee Electrical Problems



  • I have a 94 Jeep Grand Cherokee Laredo. I just bought this Jeep. It needed a fuelpump and i had that replaced, then a map sensor. Now when I start it it will immediately stop. Everybody is telling my all kind of ways to reset the security system. I just need to know the correct way!
  • On my 94 Grand Cherokee limited there are two ways. One is to lock and unlock the rear hatch. The other is with the keyless entry, lock and unlock a few times. I saw a way to disable the security system all together posted a while back, which I'm going to try but haven't yet.
  • Four wheel discs,auto,inline six,2 whl drive. Have intermittent front brake (both)
    problem.They do not fully retract. Park the car and they will retract, This is only the
    front. Backs are ok. Vehicle has 103,000 miles, Stops straight line, no lights and ABS lite lights when car strarts and then goes out as it should. Changed master cyl
    -did not correct problem. Power booster seems ok per book tests. The pedal gets
    very hard and very little travel when this happens. Any ideas?
  • The Graphic display module on my jeep blinks off and on at times and it keeps saying TAILGATE LIFT OPEN even when the lift is closed therefore causing the rear wipers not to work. Also when headlights are in the auto position sometimes they just start flashing off and on. Has anyone else had these problems?
  • Sounds like my problem is roughly the same. But I checked fuses and battery cable connection. Problem is the car doesn't turn over on first try. Usually after 2 or 3. Also, the radio clock resets and the auto light feature does not always work. I've checked fuses and battery cable connection. I did replace the battery about 8 months ago due to old battery had leak and some corrosion around terminals and posts. I don't think I did a good enough job cleaning all the old corrosion as leftover corrosion residue is still evident. I did check battery fluid level and it is fine and the fuses are fine. I will clean posts and terminals this weekend but I suspect that's not it. Next resort will be to replace battery cables. Is this futile? Also, is it more likely there's a short somewhere and I really should take it in?
  • I had the same problem on my Ford PU, and it turned out the flexible brake lines on both sides had swollen on the inside, restricting the return of the brake bluid to the master cylinder. If your brake components are clean of rust so that they can move freely, then it is probably those lines or the brake cylinders themselves.
  • Have a 2003 JGC Overland that I got on 12/12/09, registered on Jeep owner website and found that recall on seat heater had never been done. Took to dealer for the switchout and next day could not feel any heat on low setting . gear shift handle was warm to touch when I went back, told it was heat coming across ?transfer. stated everything checked out fine and the original recall had been recalled. that was 2 wks ago, today gear shift handle warm stopped after 15 mins. When I got back in car later, handle warm, steering wheel hot and space between wheel and dash, car parked in shade so I knew it was not from the sun and that by the time I got back to dealer the heat would be gone. It was. Does anyone have an idea of what,s going on, because this car was working well before this and because I drive to various states to work so I know how it felt before. Going back to dealer tomorrow and I not accepting "we can't find anything" cause I'm due to get back on the road soon. :(
  • i have a 95 jeep grd. cherokee, the PCM module clicks repeatadly when i turn the ignition switch on. i am getting plenty of fuel to the plugs but no spark, i have changed the plugs wires, rotor, dist cap, coil pack all relays in the PCM and installed a new fuel pump no fuses are blown the engine cranks fine and the rotor turns i still cant get spark i have asked a bunch of people and tried everything i have been told about but still no luck. any suggestions?
  • Thanks mprinohio, I'll give that a whirl this weekend.
  • Sounds like a lot of electrical issue questions, few solutions. Dang disappointing.
  • I have a 94 Grand Cherokee Limited that does the same thing. Mine also has a relay that clicks when any door is open. And when the display blinks the cargo light blinds too. Other little things that are to numerous to list.No one can give me any answers.
  • I Have a 1998 Grand Cherokee 4x2. A few months ago my gauge cluster began to turn on and off, and eventually while driving the Jeep just shut down. It still had electic power but would not turn over. I ended up having to replace the computer. Now about two months with the new computer the gauges are turning on and off again. What should I check for, or replace before the computer dies on me again.
  • I have a 1999 Jeep Grand Cherokee Laredo 2x2. A couple of weeks ago my vehicle started giving me problems. Wehn i would crank my Jeep up the oil gauge had a reading of zero even though i had my oil changed two weeks prior to the incidents. When ever i crank my Jeep up and press my gas pedals the oil gauge goes back to the middle, but as soon as i drive off it falls back down to the zero and the check guage light comes back on. Does anyone have an ideao to what it could be? Thanks
  • tuggajbtuggajb Posts: 646
    i would first change the oil pressure sending unit that sounds as if that went bad
  • Your problem may fall into the same category as the rest of us, as this may ultimately be another one of those electrical problems that many of us don't have a resolution for.

    However, the first thing to do, is to check the diagnostic code for your problem. It's an easy thing to do on the JGC (at least on my 2000 JGC it is). With the vehicle not running, turn the key toward ACC (backward or opposite of starting) once, then back to the original position. Perform this three times. On the third attempt, the "P" diagnostic code will be displayed in the same area as your odometer, followed by the word "done". Perform an internet search for Jeep diagnostic codes, to find the reason for your problem.

    Realize that this may be a false code; i.e. something that doesn't really indicate the true problem. As I said, many of the older Jeeps are experiencing problems with gauges not working, in conjunction with dashboard lights being lit up. No one appears to have a resolution for this. If you take the vehicle to a dealership, they'll probably attempt to change the PCM and/or BCM, which will cost you a pretty penny. Rest assured, that won't solve the problem.

    Check other online boards like CNET, but you won't find much in the way of help. Sorry.
  • Can anyone help me with this New Problum,
    I own a 2001 Jeep Grand Cherokee 4.7, i drove it yesterday and it was running great, now today it will not turn over,when you open the hood you smell a strong electrics burning under the battery? Does anybody know why i am getting a strong smell of electrics burning and would this stop the truck from turning over.
    Also i replaced the battery last week. :confuse:
  • tidestertidester Posts: 10,059
    It sounds like you either have a short circuit somewhere in your electrical system or your alternator is burned out.

    tidester, host
    SUVs and Smart Shopper
  • tuggajbtuggajb Posts: 646
    could have a bad starter as when you try to start if starter is bad will smell bad could be short in starter
  • kman22kman22 Posts: 2
    OK, so these problems may not have anything to do with one another but i get the sense they are related...

    Jeep GC 2001
    - wipers stopped working about a month ago. then a few days later started working again
    - tailgate power lock stopped working a week or two ago. works sometimes but mostly not
    - today, blinkers would not work. Lever on steering column goes up and down, but no "clicking" or arrows showing on dash.

    Anyone have any thoughts?

    and somewhat related, How do you check or change the fuses in the box under the hood?

    thanks- E Kamer
  • wcf59wcf59 Posts: 2
    I just bought a 95 JGC with straight 6, auto 4WD, 159,000 miles. The tranny is supposed to be out. When I looked at it we had trouble getting it started, but after leaving the key on for several minutes I heard a click then the fuel pump ran and I was able to start it. I towed it home today and now it wont start. Im not getting power at the fuel pump. Ive checked ALL fuses and relays and all are good. Im leaning towarda PCM problem but dont know how to check it. I also need a wiring diagram that shows what wire coming from the PCM powers the fuel system. There are some otehr issues that Ill be asking about but need to get it running first.
  • wcf59wcf59 Posts: 2
    Update: Its a 1994 JGC. I replaced the pcm with one I found in a salvage yard and it now starts. The tranny is messed up. Bucks and shakes sometimes when in drive with foot on brake. reverse seems fine. Not much power driving forward. Power windows are not owrking. I replaced the master switch with one from salvage but they still dont work. There is power at the master switch. the latch on the rear hatch doesnt work eight, seems like the handls qont pull the rod far enough to release the latch. same on the rear passenger door. Also the power door locks dont work on all of the doors.
  • Hi -- sorry if this is in the wrong place but Im having a problem with my Grand Cherokee (1993).

    For the past few months the 'Check Oil Level' Message has been coming up on the computer notification system over and over again. I have changed and checked the oil several times, added 2 extra quarts, and done everything I can think of to get it to stop. I am wondering, what are my options here.. Is there a way I can disconnect or remove something to atleast get it to shut off?

    Any help would be greatly appreciated. Thanks in advance.
  • lisac0608lisac0608 Posts: 1
    edited April 2010
    my power windows dont work, when i lock my doors using my key all doors lock except the drivers door...

    tonight when i cranked it up i have my lights on auto and they would not come on,i have to twist it to "on"... where it shows how many miles to empty,miles to service, outside temp etc... on the roof its showing -- ..... my radio works and dash lights, when i twist my lights all the way off my radio lights go off but not the ones in the dash. oh yea and at the same time this happened my ac is not cooling
  • gaj2888gaj2888 Posts: 5
    Had similar problems with my Jeep Cherokee. Check the wiring running through the drivers side door (probably running through a black conduit or hose). You more then likely have a crack in one of the wires inside this hose causing a short. In the cherokee this was the orange wire, check them all.
  • Similar issue to Donna's. And, I've previously posted but now have additional symptoms:
    The skinny: '04 Jeep JGC Limited SOHC. I replaced the battery in May of 2009. At the time, the terminals were showing evidence of corrosion and I stupidly did not clean the cables. But, I did clean them off in January of 2010.

    The issue: Car will not start right away. Problem goes away for a couple weeks, then comes back. No electronics will work. But fiddling with ignition, pumping brakes (don't ask me why...), doing an Irish jig, taking a pen cap and chewing 7 times, then wait for about 1-2 minutes, starts up just fine. Sometimes, I go into a store and depending how long I'm gone, it will not start right away. If it sits for a better part of the day, it'll start just fine.
    But, the clock resets to 12. However, the radio presets are all still there. Seat memory still there. No other problems. Car drives fine, shifts fine, everything. Oh, but third brake light in hatch is out (and I think this has been out for a very long time).

    Symptoms: It all started with the car not wanting to turn over, so I tried a couple more times and started up just fine. Then, my wife had similar issue a couple weeks after that. Then, a couple weeks later, I had same issue but started noticing other things other than the car not wanting to start. No sounds, no clicking, just no nothing. Then, for some unknown reason, it starts up as if nothing was wrong.

    Here's what I've noticed the half-dozen times or so it's happened:
    When I shut car off and remove ignition key, the driver's seat does not move back. I open the door, no interior lights, nothing. Can't lock it with key fob, nothing.
    When I put ignition key back in and to the ACC position, the needles in all the guages flicker up and down/back and forth about a quarter inch. And, I hear a clicking sound from under the dash or hood (not sure which). I try to turn it over, needles in gauges stop and absolutely nothing happens.
    Recently, my wife noticed the malfunction warning light come on for a day, but I drove it the next day and did not get a warning light at all.
    The transmission fluid needs to be changed and recently had passenger side window regulator replaced but this problem has been going on since before the regulator went out.

    I'm now thinking that it's a control module. Would it be the PCM? Does anyone have any ideas or suggestions? I really don't want to spend a grand I don't have.
    I've heard the dealer has to re-program the PCM when it has been replaced. Is this true?
  • I have a 2002 Limited that I used to love until I started having problems. Here is the list and I would be ever grateful if anyone can help with... any of them.

    1. Airbag light comes on intermittenly

    Sometimes I can go a whole week without it coming on and sometimes it will come on and off every 10 seconds or so and drive me insane. What's causing this? I tried and see if turning the steering wheel slowly to see if it does at a certain angle, but it comes on randomly at whatever angle... whenever it feels like it.

    2. Pedal adjust

    For some reason, the accelator is stuck on the furthest setting and the brake pedal is stuck on the closest setting. This makes for a rather awkward motion whenever I have to stop since I basically have to heave my foot over and up 12 inches to stop. How do I fix this?

    3. Passenger seat tilt stuck

    I can hear the motor sluggishly humming, but the far right and far left switches don't move the seat at all. The middle one still moves the seat backward and forward fine, just not tilt or elevate.

    4. Squeaking noise underneath

    Whenever I stop or go over a speed bump, there is a squeaking noise. It's not the brakes because I know what that sounds like, but this one sounds like it's coming from the suspension. What's causing it? Better yet, how do I fix it?

    Help, please?
  • stowie81stowie81 Posts: 1
    i have a 91 jeep cherokee with a startd when i was driving and it died on me.. start back up and stall again.. replaced the whole fuel system and now when i turn the key on.. i have no power to the ignition and fuel pump.. but lights and horn works.. fuses r good.. couldnt find any fusible stumped..anyone got any suggestions?.. o.. i also replaced the crank sensor and auto shutdown relay
  • jm55jm55 Posts: 1
    My1999 V8 Jeep Grand Cherokee limited – 1J4GW68N7XC6889389- stalls and stops mostly in heavy traffic condition. stop and go at slow speeds. Some times it stops also on cruising at 80 or 90 kmph. It happens about 3 to 4 times a day at slow speeds or cruising. what I have noticed as engine stalls and Check Gages light is on. Initially all gages looks ok. Within 2 or three seconds fuel gage shows Empty and security KEY sign is on. If you leave it these for 5 or 10 minutes and keep ignition on, if fuel gauge moves (showing not empty) it will start and you can drive off. If traffic is heavy it may stall again after a kilometer or so. If you can drive at about 80Kmph it goes for about 30 to 40 minutes and stall again. Twice I gave it to two different agency workshops and got the wiring checked and cleaned. On both occasions it worked without any stalling for 5 days and started to stall again. In both occasions there was no error code displayed when checked with computer. When stalling occurs and fuel gauge shows empty; the computer shows NO Communication with PCM.
    Stalling problem is not there in winter on Highways. I can drive 500 to 600 km in one go. But as soon as it enters heavy city traffic it stalls with loss of power and fuel gage shows Empty along with other gauges.
    I Got crank position sensor replaced at the workshop but problem persists. Also tried swapping of the ASD and fuel pump relay. Checked all cleaned all wiring harness. Still problem is existing for almost 2 years now.
  • jeepssuckjeepssuck Posts: 10
    Yours is a pretty common problem among Jeeps. The stalling without any notice is in all likelihood, the malfunction of the crankcase sensor. They can't run a diagnostic because a check engine light doesn't appear. The crank sensor runs about $50.00 at Auto Zone, or less if you purchase it on Ebay. There are YouTube videos that tell you how to replace the sensor, but it's better left to a mechanic. Had a mechanic replace mine for $60.00, and had no more issues with stalling.

    FYI: Never take a Jeep to a Jeep garage for issues like this. They are nothing but talentless hacks that are out to gouge the customer out of $$$, and generally can't fix the problem. Try to find a good mechanic that will work with you on solving these issues, and continue to read the forums (another good one on CNET), because chances are, you will experience more problems that will seem totally strange and illogical. Ultimately, you can blame many of the Jeep issues to just great American ingenuity, and is a testament to why Chrysler is in the condition that it is.
  • I believe I now have a "SHORT" in my electrical, last night we had a long wet unusual storm for Boulder, CO. and this morning my "Dome" lights staied on, my Alarm sounds after I've secured the vehicle after 5 minn. and my instrument panel says the rear loading hatch is open. I've disconnected and reconnected the batter, what else do i need to do
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