KJCrazy
Full Access Member
After doing more research, which is all I can really do right now because of lousy weather and a dwindling budget, I think I may have found my original problem.
When my daughter's '02 KJ, 3.7L V6 originally overheated back in July of 2017, her e-fan was not kicking on. She sat so long with her blinkers on that her battery went dead. My wife drove almost all the way to IUP to give her a jump and bring her some coolant. I was at work at this time.
Her KJ battery wasn't taking a charge from our 04 WJ, so after work, I brought her a new battery. My wife is no dumby, but the person that had the red rubber cover over the NEGATIVE terminal was a complete idiot. I noticed the mistake too late, I feel.
We've been fighting this thing ever since, and I believe the PCM was damaged on that day. After much thought, my 2000 Dodge Ram Van and my 2000 WJ were both acting very similar to her KJ when I replaced PCMs in them with success.. Sometimes it is hard to start, sometimes it runs beautifully, sometimes it runs rough and won't idle.....so on and so forth....
With all the weird codes popping up and disappearing and her engine in an inconsistent state of performance, I believe my next move is a PCM. I hate to just throw parts at it, but who can disagree that her PCM was most likely damaged due to the crossed battery cables? I'm just lucky my wife's '04 PCM wasn't damaged in the process.
When my daughter's '02 KJ, 3.7L V6 originally overheated back in July of 2017, her e-fan was not kicking on. She sat so long with her blinkers on that her battery went dead. My wife drove almost all the way to IUP to give her a jump and bring her some coolant. I was at work at this time.
Her KJ battery wasn't taking a charge from our 04 WJ, so after work, I brought her a new battery. My wife is no dumby, but the person that had the red rubber cover over the NEGATIVE terminal was a complete idiot. I noticed the mistake too late, I feel.
We've been fighting this thing ever since, and I believe the PCM was damaged on that day. After much thought, my 2000 Dodge Ram Van and my 2000 WJ were both acting very similar to her KJ when I replaced PCMs in them with success.. Sometimes it is hard to start, sometimes it runs beautifully, sometimes it runs rough and won't idle.....so on and so forth....
With all the weird codes popping up and disappearing and her engine in an inconsistent state of performance, I believe my next move is a PCM. I hate to just throw parts at it, but who can disagree that her PCM was most likely damaged due to the crossed battery cables? I'm just lucky my wife's '04 PCM wasn't damaged in the process.
