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Jeep Grand Cherokee PCM Module Replacement

159 messages,  Last post on Aug 04, 2012 at 2:30 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 16 of 16

#150 of 159 Re: PCM Module Out of Stock [jgcguy77] by scottconrad

Jul 18, 2011 (3:21 pm)

Replying to: jgcguy77 (Apr 14, 2011 3:53 pm)
my wife's jeep just suddenly wont start. has juice but no spark at coil replaced ignition coil and still no spark will replace module next after reading a lot of other problems i think its a short somewhere and bad pcm( whatever that is ) because we have speakers in the door that were installed after market and they hang on just by the wires and each one is different one is horizontal and the other vertical screwed in with drywall screws just want to know if that is a good answer to my problem (just need a little help(scottyac1hotmail.com)

#151 of 159 Re: PCM Module Replacement [rgarmon] by erm1974

Jul 24, 2011 (9:39 pm)

Replying to: rgarmon (May 05, 2011 3:27 pm)
the first part of your problem sounds like the crankshaft position sensor i was having the same problem and guess what..it's fairly easy to replace..the second check all the wiring on the drivers door for shorts for some reason when you short one of the wires on that door the gauges do that on most and check the relay under the drivers side dash over the fuse box it's not easy to get to but there are a few there and i'm not sure the correct on but a friend told me one of the relays go to the gauges and can cause that..good luck..hope anything helped..

#152 of 159 2001 JGCL Not starting by erm1974

Jul 24, 2011 (10:10 pm)

Hi Every one I could really use help.
My jeep is turning over great but wont start. One day my Girlfriend went to start it and it turned over Ok but the cells in the batt were kinda shot and it just did not want to start. I knew the batt was going so I replaced with new one and it turn over great and I'm waiting for it to start and nothing just turning over great. I went through the Haynes check list and went step by step and the only thing that I seem to have wrong so far is the wire harness going to the coil rail when you turn the key on position but not try to start it charges the line to 12.8 volts and then dies right back to zero.. The book said it should stay at the 12 volts and if not check the auto shutdown relay well I have looked and I can not find it I thought it was on the engine fuse block and then under the steering wheel located over the fuse box and none of those relays seem to go to the coil rail wire harness. Oh and if it matters the alarm was not working correct right after the batt was changed but seems to be working fine now. If any one has dealt with this or knows what to do or has another good reason I should be looking at something else I would be grateful for any thoughts you had or pointers I just cant afford to throw more money into this jeep and it's still has a loan on it so I could really use some help. Even catch me at my email. I don't care at this point burnzallmedia2k5yahoo.com subject Edmunds jeep help..Thanks every one..Will also check in here.

#153 of 159 Re: PCM Module Replacement [rgarmon] by bhunley

Aug 11, 2011 (5:31 pm)

Replying to: rgarmon (May 05, 2011 3:27 pm)
crank shaft sensor. i just had the same exact problem with mine. took forever to figure out because like yours it wasnt throwing off any codes

#154 of 159 Re: She LIVES!!!! [rgarmon] by nitronorm1

Sep 07, 2011 (9:09 pm)

Replying to: rgarmon (May 05, 2011 3:20 pm)
hey I hope this helps I had the same thing I feel you need to take the PCM out and send it to SIA to have it rebuilt they will find moisture in it and they will give it an update so the Jeep runs stronger Head office Florida and it will be sent to Tilden Ill. they did a great job for me the dealer I went to Demeyers in Simcoe ontario had no idea and charged me 900 bucks and I had to tow it home and fix it myself

#155 of 159 Re: She LIVES!!!! [nitronorm1] by vinetta

Dec 06, 2011 (3:43 am)

Replying to: nitronorm1 (Sep 07, 2011 9:09 pm)
what is sia

#156 of 159 pcm replacement by nitronorm1

Jan 06, 2012 (8:39 pm)

SIA Electronics Tilden Il. they will repair your PCM use google search engine later Nitro

#157 of 159 Re: PCM Module Replacement [rgarmon] by glc1620

Jan 07, 2012 (1:33 am)

Replying to: rgarmon (May 05, 2011 3:27 pm)
if low on transmission fluid and an auto matic stalling will happen think not think again

#158 of 159 should i take to dealer by glc1620

Jan 07, 2012 (1:34 am)

pcm fuses in line links can but dont go unless bigger problem there is

#159 of 159 2000 JGCL V-8 pcm? or not the pcm? by bamagirl14

Aug 04, 2012 (2:30 am)

Need help my jeep (better off as scrap) will crank but not turn over, sentry key light on, no gauges and not getting a code read. Last resort took to dealership paid the $85 they cant get a reading. They wanted to go further for $200 test wires (yeah right). That took whole 3 hours for them to tell me my pcm has internal failure should be putting out 5 volts but only putting out 1 volt. This would cost me $1500.0 minus the $85 woo-hoo thats $1415.00 pcm only $700. Last time I checked $700 for labor? I may be female but not stupid, so anyone have any suggestions please i'm all ears!

Messages Page 16 of 16

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