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Old 06-19-2012, 03:43 PM   #1
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ECU/PCM/PCU/Voltage regulator 97 tj question?

Alright I want to try and swap my broken ecu/voltage regulator for a buddies real quick just to see if thats whats wrong with my jeep. I have a 97 tj 4cyl and he has a 4.0l sport 97 tj. The Ecu's are connected the same and look identical. Can I put it in my jeep to see if thats the problem without ruining his component or will it ruin the computer by putting it in a dif jeep. Dealerships dont seem to care or give a rats butt about people that didnt buy jeeps from them or they dont have 97 tj parts (is what they told me.) The part is not expensive about 250$ but I am worried thats not the problem and if that part touches my jeep I can not take it back (dont know how they know but whatever.) However I am sure that replacing the ecu will give me about a 90% chance that my tj will run again. I have replaced the battery, alt, cables and the jeep runs fine (and starts fine), but the battery will not hold a charge. So sorry for long intro but main question is can I put his computer in my jeep and start it to see if thats the problem or will it short circuit? Thank you!

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Old 06-19-2012, 03:53 PM   #2
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No!

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Old 02-17-2013, 02:38 AM   #3
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I don't know what kind of no that is. No! it's a problem or no it's not. Anyone that comes across this thread, no its not a good idea. Each PCM is programmed with each jeep.
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Old 02-17-2013, 11:40 AM   #4
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No because it won't work. Your ECM is programmed for a 4-banger his is programmed for the 4.0L engine.
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