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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 16 of 16

#151 of 160 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 160 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 160 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 160 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 160 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 160 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 160 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 160 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 160 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!

#160 of 160 jeep fixing is detective work by eugene639

Jun 02, 2013 (12:25 am)

Any suggestions? we all want to know. what fixed yours??? I find they are not all the same. they have different parts and systems. I go to the wrecking yard and see a bunch of really clean, well kept jeeps being torn apart and the pieces used. Some are all missing the same things. They have multiple modules. They intercommunicate. They are an AMC they have Dodge transmissions. there are GM p/s pumps FORD ignitions. Chrysler electronics. WHAT A MESS!!! How CAN it work???? They don't know. They cant write a book. Its full of errors. It's full of omissions. all you can do is goto your library and print the thing out. Then go back and print the updates. I have read all 150 plus entries of these discussions and time after time I say, HEY there's a TSB on that!!!! that's recalled!!!! or Jeep used to send us those at Ford when they couldn't fix them!!!! I suggest that each of you (if you care enough to spend parts money) print the MITCHELL repair info. If it doesn't make sense, look for the update pages under "dealer info" in the MITCHELL database. Then print up your TSB's and recalls that pertain. Go to your Jeep with well made tools. Follow as best you can, the steps in the testing procedures. Replace only parts that are failed. Get a handful of replacement parts at the wrecking yard. Try these when you get lost. Then, after you have questions that can be solved, ask your dealer service dept for help and direction. then, and only then , can you see why they aren't able to give a cheap and quick answer . Library info is free, I rely upon them for many answers. The cost is based on paper to print 10c a page. Whats that??? You dont have time??? Neither does the dealer, to do the required research. But, the money saved can be spent elsewhere. Instead of buying parts on a guess fix. I also received help by watching U-TUBE sensor testing for Jeep "Hall Effect"switches. It was a course led by a gifted teacher and videoed by his students . That lead to an understanding that is not available in any book. Thanks for reading. If you love your Jeep; you can make the time. They are all pieces of #$%$#^&%$#. so don't feel bad

Messages Page 16 of 16

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