The transmission shop put a reader on it and couldn’t pull the codes. Honestly I don’t know what they used. Manually pulling the codes with a jumper wire doesn’t work. The CEL doesn’t flash when the jumper is used. Part number for the ECU is 89661-35840.
Truck is a 1993. 22re, A340F, 4wd, completely stock with 149k miles. I have not traced down and checked all the wiring. Plan to do this in a few days. Ok, my observations, before it stuck in gear the first time, the shift to 3rd was delayed. It wouldn’t shift right away, but it would...
Truck was running fine. Started not wanting to shift into high gear. Come up to a stop sign, check engine light comes on and it will barely move. Transmission never down shifted. Tried to pull the codes, but nothing happens when the jumper wire is plugged in. Check engine light does not...