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Old 10-24-2005, 12:39 PM   #1 (permalink)
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ecu... 97 tj engine in a 95 yj

I might buy a friend's 95 yj... he threw a rod in it last year, so I helped him put in a 97 tj 2.5l engine to replace the old yj 2.5l. If it buy it, it will need a new ECU because it went out. Should I buy a YJ ecu or a TJ ecu?
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Old 10-24-2005, 12:50 PM   #2 (permalink)
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It will depend on how you did the swap was done, so I'd ask him if he kept the YJ ECU or swapped in the TJ ECU.
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Old 10-28-2005, 08:45 AM   #3 (permalink)
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He kept the YJ ecu. Upon completion of the swap, then engine ran REALLY rich for 6 months until the jeep stopped working.

Last edited by wiggamoe; 10-28-2005 at 08:46 AM.
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Old 10-28-2005, 10:44 AM   #4 (permalink)
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Quote:
Originally Posted by wiggamoe
He kept the YJ ecu. Upon completion of the swap, then engine ran REALLY rich for 6 months until the jeep stopped working.
I would run the ecu that comes with the motor. 97 with 97 - 95 with 95. Running the other ecu might be why it ran rich and died. I don't think you ever what to mix ecu's with different motors. I'm sure some have done it with out problems though.
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