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Posted on Mar 06, 2011
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Hello, I have a 1996 Jeep Grand Cherokee V6. I had the pcm replaced Aug 2010. I recently had an oil sensor problem and when I picked it up from the shop and drove away the check gauges light came on and my battery gauge jumped clear over 19v. Slowly the Jeep started tugging and chugging and losing power to where it eventually died. I had the gas pedal slammed to the floor and it wouldn't go over 3 or 4 mph. After I let it sit for awhile, it started again and I made it about 8 blocks before it did the same thing. My pcm was replaced because it was losing its charge but tugging and chugging like it is now. I understand the voltage regulator is in the pcm on this model. Is there something else that could be causing my pcm to continually go bad? It has a new battery, alternator, starter and selenoid.

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We had to back out the 2 screws in back of the pcm because they were shorting out the pcm, zip tie the connectors in with 24" zip ties.

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The first thing to do is check for faulty/damaged wiring to the PCM.

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