Mechanics

POWERTRAIN CONTROL MODULE

2005 Dodge Caravan

Computer problem
2005 Dodge Caravan 6 cyl Two Wheel Drive Automatic 101000 miles

I have a 2005 Dodge Grand Caravan SXT 3.8 Lv6 and the check engine light came on and after the local auto parts store code said miss fire detected cylinder number four probable cause bad plug. So we changed the plugs and wires. A few days later the light came on again and this time it was the EGR valve, we changed that and the vehicle ran fine for three or four weeks. The light came on again and we change the number four fuel injector and the light stayed on again and this it was the throttle positioning sensor, change that and the vehicle still ran the same, hesitating cutting out when accelerating and misfiring. So I brought it to the dealer and their diagnostics of the problem is a short somewhere in the wiring and they would take two hours to fix it. I just heard from them and now they are saying the power train control module is bad and we need to replace it. Can a vehicle run at all with a bad power train control module, could this be the problem? Any help in this matter would be appreciated.
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Tommy Morrison
May 31, 2010.



Yes, it could run with a bad PCM, and that could be the problem. However, many times it is nothing more than the large wiring harness plug that goes to the PCM. They corrode or come loose and cause problems. You may want to ask if they checked that first.

Let me know if you have other questions.

Joe