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1988 XJ AW4 Tranny Computer Question

88WoodXJ

NAXJA Forum User
Location
Alexandria, VA
I am trying to verify I have the most up to date flashed TCM and the dealer told me it does not have a TCM that the transmission (AW4) is controlled by the ECM my model year??? I was quoted 331.62 for part number JR007842 and told that was all they could do for me. I have read on several other posts that there is an issue with older TCMs with Bump Shift and the use of newer transmission fluids and as I have a new transmission being put in (got 230000 miles out of the last one, god rest its soul), I want to make sure all is well for my new Mopar Transmisison. I basically want to know if the dealer is blowing smoke and trying to sell me a new ECM or if this is right and if anyone has found it to work to resolve issues out their Jeep...
 
Hey,

Get a TCU from the junkyard costs like $25 maybe less. Never heard of "Bump Shift"? Sounds like they're trying to snow u.

Thx, Phil
 
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