Ask the Car People.SM


Jeep Grand Cherokee PCM Module Replacement

160 messages,  Last post on Jun 02, 2013 at 12:25 AM

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

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

Messages Page 13 of 16

#120 of 160 Re: HELP.....PLease [jeffwtuttle] by neguy

Dec 24, 2009 (10:26 am)

Replying to: jeffwtuttle (Mar 01, 2008 12:53 pm)
have you figured out anything yet? i will keep reading more post and see if you found anything but i saw this first and said that sounds like me. my next thing is gonna be the camshaft position sensor.

#121 of 160 '02 GC check engine light flashing on/off by crashbob

Jan 03, 2010 (8:10 pm)

Hey,
 
I'm new here and am hoping to get some input to resolve my problem. My inline 6 started misfiring at 35 mph and the check engine light starts blinking on and off. I had the codes checked and all that was indicated was cylinders 1, 3 and 6 were misfiring. Upon resetting the light, the problem went away. Next time I drove it, the misfiring and blinking light came back. Any ideas or similar experiences?
 
Thanks.
CrashBob

#122 of 160 93 GRAND CHEROKEE by gbchallenger

Jan 27, 2010 (7:04 pm)

i have a 93 5.2 grand cherokee that will not start i replaced coil,crank sensor, cam sensor, had pcm rebuild, no spark at the coil or wires used 2 differnt coils to see if any change bu nothing i had problems with the pcm befor it stoped only about 10 or 15 min running time then you let it site for about 10 min it well restart last week it started to do it all over again and died on the fwy so i checked crank sensor and cam sensor and replaced but still nothing can any body tell me what to do i had a mechanic look at it and he says he think it is the pcm even if i had it rebuild

#123 of 160 Re: 93 GRAND CHEROKEE [gbchallenger] by peteinnh

Jan 28, 2010 (5:03 am)

Replying to: gbchallenger (Jan 27, 2010 7:04 pm)
I'm not a mechanic but I would agree with his assessment. I had a rebuilt PCM that also needed replacement. Good luck

#124 of 160 98 jgc 5.9 limited by jeffwtuttle

Apr 07, 2010 (4:03 pm)

Hello everyone again. Well after much to do with my 93 jgc my son wanted to get his own but of course do me one better so he got the 5.9 jgc. Great Jeep until a few days ago. He went 4x4ing with it and it started to sputter then died. At first I thought "this will be easy, just some water in the dist". Well he got it home and I found no spark from the coil to the dist. Well easy replace the coil? Ya right, did that and still no spark. Well after going thru all this with my 93 the first thought is the camshaft ps. Replaced that and still no spark out of the coil. PCM..easy my sister has a 5.9 also and stole the PCM out of it and still no spark..I know what your thinking maybe mine was bad. I put it in her Jeep and it ran fine. Darn it I thought, lets try all the relays so one by one I took them off her jeep and replaced it with the one from my sons Jeep. Nothing again I have no spark.
 
So after all this I am at a loss here. Can anyone give me another idea on where to go from here? Again I have a running 5.9 to swap parts from and to check my parts with to be sure if its working...So please anyone have somewhere to go?
 
The only other thing I was thinking was a crankshaft ps..but is that any different from the camshaft ps? If so where is it located?
 
Thanks so much in advance,
Jeff...and son.

#125 of 160 2005 Jeep Grand Cherokee Electrical issues by cthessing

Jun 26, 2010 (8:07 am)

Guidance needed - My 2005 Jeep Grand Cherokee Limited 5.7L V8Hemi is beginning to seem possessed. Either during driving or upon starting, the entire electrical systems blinks a time or two and then completely shuts down. I can strill drive but no guages, air conditioning or lights (inside or out). Could this be an easy fix with a new powertrain control module? Any thoughts?
 
Thanks,
C

#126 of 160 Cherokke zj 93 fuel problem by kjarri

Jul 05, 2010 (12:40 pm)

Hi. vhen i swits on it not start but if im whaitin for som sekond the chec engin kom on an the auto shut down raily klikk an then the ligt go of an i can start and its ok,
pleas post som ideas.
 
rigard. Kjarri

#127 of 160 Re: 2005 Jeep Grand Cherokee Electrical issues [cthessing] by tuggajb

Jul 06, 2010 (4:43 am)

Replying to: cthessing (Jun 26, 2010 8:07 am)
i would replace the ignition switch first as that is a lot cheaper than a pcm

#128 of 160 Fried PCM on 1999 Jeep GC? by mrspeed3

Aug 15, 2010 (8:12 pm)

I was jump starting my JGC Laredo at night when the postive cable hit the negative post momentarily causing a significant spark. I then tried to start it but got the check engine and sentry lights that never extingushed. Gauges on instrument cluster also went wacky. I checked all fuses and they are fine. From what Ive read it sounds like the PCM may have been damaged. I took it out and want to order a used one off of ebay however is this the only potential solution? Will a Jeep dealership have to reprogram the 'new' PCM? Thanks

#129 of 160 Re: Fried PCM on 1999 Jeep GC? [mrspeed3] by floridiot

Sep 02, 2010 (3:25 pm)

Replying to: mrspeed3 (Aug 15, 2010 8:12 pm)
you can buy recond PCMs from several dealers on ebay. Furnish VIN,current
miles,and old PCM model number. They range from 165.00 to 250.00 and have
lifetime warrenty. They are plug and play,no trips to dealer etc and have phone
numbers if you need guidence

Messages Page 13 of 16

To POST a message, please Sign In.

Advertisement

Browse by Category

Browse by Vehicle
   View All Vehicles

Browse by Board
Browse by Topic
View All Topics

Edmunds Community

Advertisement