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
#393 of 735 Re: 2005 grand cherokee limited- intermittent cluster/ac/lights failure [napagirl]
Sep 16, 2010 (3:26 am)
The symptoms you state are very similar to what i went through with my 2006 GCJ-L. After the dealer replaced many components on BUS Can-C it then came down to the wiring harness. alot of modules that were replaced prior to finally replacing the wiring harness were probably Ok but it was not easy to know at that time.
From all the threads I have seen on this site and others i would venture to tell you... ITS THE HARNESS But I reserve the right to be completely wrong,
Since my harness has been replaced, at 85k miles I believe my Jeep is running better than when I bought it used from dealer at 29k miles..
it is my suspicion, now with 20/20 hindsight that the original owner may have experienced the same problem I had (sporadic dash cluster / gauges, etc), and said ... electrical problems - time to trade it in...
These electrical modules at $400+ and 500+ a pop are an expensive way to go the route of " let's try this and see if it works"
see my earlier posts for more info
please keep us posted on your progress
#395 of 735 2005 JGC with not even 77K
Sep 16, 2010 (5:54 pm)
Where do I start! Just tonight, drove jeep, parked and went in somewhere, came out 45 min later only to start it up and it would not turn on. Thought it was the battery and a friend who is a mechanic tried jumping it but that was not it. Everything would turn on, lights, dash, radio, windows up and down, it just would not turn on. Thinking it is something electrical for sure and stressing like crazy!!!! I have had this car since 15K and don't drive it everyday, really baby it! Anyone with some ideas? Don't need to spend more than I have to but it looks like by what everyone is saying, I just need to get rid of it. Not alternator. Not battery since everything comes on. Please, Please imput. Thanks...Much appreciated!!!!
#396 of 735 Re: PCM problem [brianjacob83]
Sep 17, 2010 (8:24 am)
any luck finding the problem. I'm having similar, cranks & no start problems
#397 of 735 1993 jeep grande cherokee loredo
Sep 19, 2010 (5:03 am)
lights are flashing as if someone hit the panic button engine rotates but doesnt fire doesnt get any fuel in the intake found some wires that were melted together seperated them and taped them up and still no change guessing the pcm must be bad dont know and dont know how to check it and dont know how to find one
any imformation would be greatly appreciated thanks
#398 of 735 Re: 1993 jeep grande cherokee loredo [glenhiers]
Sep 19, 2010 (11:33 am)
Lights flashing is vehicle anti theft system. Use key in door lock to reset system to stop lights. Tons of problems with security on jeep.
I have 1995 GC linited w/ V8. Same no start condition right now. No power to fuel pump. Trying to trace power from pump backwards to Bat. Will keep you posted. Where did you find melted wires? What engin? V8 or I6?
#399 of 735 Re: 1993 jeep grande cherokee loredo [glenhiers]
Sep 19, 2010 (11:37 am)
You can get a PCM on ebay for 189. Very easy to install a new one. Seller will program it specifically for you vehicle. I am still going to try and find the problem before I spen the money on a new PCM
#400 of 735 2005 Jeep Grand Cherokee electrical problems
Sep 20, 2010 (6:51 am)
I have a 2005 Jeep Grand Cherokee and it has been having what I think are electrical issues. About a year ago the lights would flicker on the dash and radio/clock intermittently. It wasn't a big issue, just annoying. Nothing else was affected...gauges and everything worked fine. It has been doing this on and off for a year, but today driving into work it started up again but the emergency brake light flickered too. Then it happened again but stayed on for a few seconds...and so did the ALB warning light. When this happened all of the dash lights turned off and I heard a pop in the radio speakers and the radio went off. Then it all went back to normal! This happened 2 more times on my 20 minute commute. I don't know if this is a dealer issue or if it's something I may be able to handle on my own (like if it's with the battery or something). The battery has been replaced recently but I have always had an issue with corrosion on one of the connectors. Could this be it? Just a bad connection? I'm just worried this may be effecting my outside lights, but really there isn't any way to tell since it happens so infrequently.
Any advice is greatly appreciated.
#401 of 735 Re: 2005 Jeep Grand Cherokee electrical problems [emilyl83]
Sep 20, 2010 (10:39 am)
Luckily (I hope) my electrical issue did not impact my engine or radio. I did sense that the vents were not working properly at the time that my dash was lighting up like a Christmas tree. The check engine light was looked into and they said I had a faulty chip in one of my keys. It was like the engine thought the car was being tampered with. It also showed that the fuel gauge was not indicating the proper levels. I took it in to a dealer over the weekend and they said they have seen this before and we replaced the ignition switch- $440 bucks! This morning, on my 120 mile commute, I had no problems whatsoever. Now, do I trust that this is fixed? No! Once you have a problem like this, you feel like your car is no longer dependable. I will keep my eye on this and let you all know if this situation occurs again. Since I have two keys, I started using the "good" key as well.
#402 of 735 Re: 2005 Jeep Grand Cherokee electrical problems [emilyl83]
Sep 25, 2010 (5:35 pm)
emilyl83, I too have a 2005 JGG and about two months ago it started acting crazy, the wipers would come on and off on their own, the dash lights would flicker, the AC would quit working intermitently, it would shift roughly in and out of MDS, etc...After many trips to the dealership and them telling me "we couldn't replicate the problem so we can't fix it", I finally started doing some research on my own. Most websites led me to believe that it is most likely the PCM (also called ECM) card. But I decided to start with the easy fix first, unplug the negative battery cable for 20 minutes to let the PCM card reset. I did this a month ago and my Jeep has been running like brand new since. If this doesn't do it, then look into replacing the ignition switch but don't pay $450 for the dealership to do it. It's really simple to do it yourself for $45.