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You are in the Jeep Cherokee and Jeep Grand Cherokee
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Jeep Grand Cherokee, Electrical, SUV
#377 of 735 Re: Electrical issues on my 1999 JGC [jeep99bummed]
Sep 01, 2010 (7:52 am)
Another thing to that is simple to check, make sure the battery is putting out at least 13.8 volts, if your battery is near 3 years old it may be getting weak. You can take it to any good parts store, Auto Zone or others will check battery voltage with engine running for free. If your battery has 14volts or higher you can rule battery out, but if anyone trys to tell you its 12.9 but its ok, don't listen, replace battery. If battery is ok, then clean contacts on ecu and bcu as the other person replied. More often than not, low voltage or dirty contacts on connecters is culprit, not the actual expensive control units. Avoid dealership. Call around to local owner run repair shops and interview them about knowledge of jeep grand cherokee. A garage unwilling to talk to you is to be avoided, it may take some searching to find that knowledgeable honest mechanic, but once you find him, establish a relationship, let him do your oil changes instead of dealer or quick lube joint, then he will be there for you when you need him. Join AAA auto club, it's cheaper than a single tow. When my battery died because i ignored symptoms like yours, they came to my location and sold and installed new battery on the spot. Once you fix, please post here what fixed it to help others, please.
#378 of 735 Radio- power but no sound & Trip Computer Issues
Sep 01, 2010 (11:51 pm)
I have a '95 JGC Laredo with a couple of electrical/electronic issues that I'm hoping are related-
1) The radio display is on but there is no sound coming from any speaker. It has the optional Infinity Gold system with the Amp under the back seat. The stereo had worked intermittently for about two years until about six months ago. It hasn't made a sound since then...
2) Trip Computer in Overhead Console- The display doesn't come on when the car is started. Usually it will 'wake up' anywhere from 5-15 minutes after starting/driving it. A few times it hasn't come on at all, even after an hour or more. When it does come on, it works fine as it always has.
3) The Vehicle Info Center (behind the shifter, under the HVAC controls) it shows the vehicle graphic and alerts for Door Ajar, Lamp Failure, Fluids Low, etc. Lately, it just flashes with the time (which shows at 12:00 all the time). It worked fine until the last couple of months....
Any ideas on my electronic gremlins? Could it be as simple as a fuse or two? Or maybe a big fuse in the Power Distribution Center (under the hood)?
Any ideas or suggestions would be greatly appreciated! I'm trying to get it ready to sell and I want to fix these problems first if I can.
#379 of 735 Re: Electrical issues on my 1999 JGC [barryz]
Sep 02, 2010 (4:32 am)
I have a 94 Jeep GCL and have the same problems. It seems another thing stops working about every month. What I need to know is what ecu and bcu are? I guess I'm ignorant. Thanks. Bobby.
#380 of 735 Re: Electrical issues on my 1999 JGC [ryelenik]
Sep 02, 2010 (10:40 am)
I can answer half of your question- ECU stands for Electronic Control Unit (or Electric Control Unit, according to some). I've also seen it referred to as the Electric/Electronic Control Module, Power Control Module and Power Control Unit. My '95 JGC has a "Power Distribution Center" under the hood (with fuses)....I think they're all the same thing??? Someone please correct me if I'm mistaken...
I hadn't ever heard BCU before, but I did a search and it seems there is a "Body Control Module"...perhaps someone can enlighten both of us on what that is!? =)
#381 of 735 Re: car goes 200 yards down the road then stops [eddobbo]
Sep 04, 2010 (6:24 am)
Did you ever figure this out???
I have a problem where in the morning, "sometimes", I turn the key and it doesn't start..no noise..if I keep holding the key it might start.. if I release the key, don't want to break it...and try again..it often starts up. It eventually starts and I find it strange that I hold the key for a while and it starts.. like 20 secs.. This is random, not all the time but when the engine is warm, I haven't noticed this problem.
Well a few weeks ago, I had the power to the engine shut off, then turn on in about 20 seconds with power returning I could drive without to much problem. Well yesterday, I had this same problem happen three times. The first time, I pulled in a gas station and shut the car off and turned it back on. The second time, I was on the free way and the car slowed down but in about 20 secs, power came back and I got out of there.. then about 5 miles later, I lost power again and pulled off the express way, it never returned, so I stopped shut off the car, turned on the key and it started again and I drove home.
Anyone had this type of problem? Like to hear your solution, write me at jtflex02 at yahoo too ...
#382 of 735 Electrical Problem with a 2000 Jeep Cherokee
Sep 04, 2010 (6:29 am)
I have a problem where in the morning, "sometimes", I turn the key and it doesn't start..no noise..if I keep holding the key it might start.. if I release the key, don't want to break it...and try again..it often starts up. It eventually starts but I find it strange that I hold the key for a while to get it to start.... like 20 secs.. or turn it a few times. This is random, not all the time but when the engine is warm, I haven't noticed this problem.
Well a few weeks ago, I had the power to the engine shut off while I was driving, then in about 20 seconds the power returned and I could drive again. The radio and lights were on just the engine when dead. Well yesterday, I had this same problem happen three times. The first time, I pulled in a gas station and shut the car off and turned it back on. The second time, I was on the free way and the car slowed down but in about 20 secs, power came back and I got out of there.. then about 5 miles later, I lost power again and pulled off the express way, it never returned, so I stopped shut off the car, turned on the key and it started again and I drove home. I got a notification to look at my gauges and I also noticed the sentry key light light, everything else looked normal.
Anyone had this type of problem? Like to hear your solution, please write me at jtflex02 at yahoo, as well as on here.
#383 of 735 Re: Electrical Problem with a 2000 Jeep Cherokee [thweattj]
Sep 04, 2010 (10:01 am)
Please do not include your email address in postings to the Forum. Thanks.
SUVs and Smart Shopper
#384 of 735 Re: A VERY ANNOYING ELECTRICAL PROBLEM [96jeep2]
Sep 04, 2010 (11:27 am)
I'm sort of having the same problem,where i just change my fuel pump,spark plugs and wires ,distributor,ignition management switch,ignition coil and now my 1996 Grand jeep cherokee seems like the battery is dead now. When i tried to get a jump it still won't charge so what do you think is the problem????? Please help!!
#385 of 735 1997 Jeep Grand Cherokee TSi
Sep 13, 2010 (5:17 am)
Bought used with under 80,000 mi. Now has 86,000 mi. Ran great untill weather got hot. This summer it started acting up. All my electrical stuff flat lined! Jeep keeps running but ac, windows, computers, radio, all gages went out. It happens randomly. Most times they come back on without me doing anything. Only once has the jeep died when this happened and one time on starting it wouldnt keep running. I can disconnect the battery and it all goes back to normal for awhile. I had a real bad spell with it and then it got some better. I love my jeep and dont want to get rid of it but while driving home one night my headlights went out!! Very scary!! I am wondering until I get the problem fixed would it work if instead of using the auto setting for my headlights I actually turned it to the on position? Would they still go out if it "flatlines" again? Also its not giving any codes. The only other problem I am having is that I have to refill my overflow for my coolent pretty regular. I get the low coolent notice if I forget to check it myself. Please HELP! Thank You Heather
#386 of 735 Interior lights stay on.
Sep 13, 2010 (4:51 pm)
1999 jeep grand cherokee laredo 6 cyl. This just started, when i turn off key, remove key, open door, interior lights turn on as they should, but when i leave vehicle and shut door, interior lights don't dim and go dark after a short while as they used to, remain on. Also if i exit vehicle and click the remote to lock, doors do lock and parking lights flash as i programmed, but the interior lights do not turn off and the red alarm set light on dash does not come on and start flashing. Luckily i can set interior lights to not light on door open by putting dash dimmer on stalk to the complete off position, so i am ok for now, but i would like to get the alarm to set and the interior lights to work as they should, any suggestions as to what and where controls this?