Engine/Transmission (1998.5 - 2002) 47 RE issue

[monkeyman]

First I have to say I do all my own work, except transmission, this is a P pumped 24 valve, it was shifting perfect but after sitting a few weeks first it lost over drive then it would stack shifts. I replaced all wiring on PCM plugs and I got it to start in first and stack the rest, still no OD, replaced valve body, all sensors, trans shop checked entire trans and said it must be electrical. Timbo TPS throws low voltage code, for all that are bald from this issue, can PCM be bad without throwing a code? Lost up till this point
Thanks, Rick

 

[SnoKing]

Have you adjust the APPS according to the instructions on Timbo's site. Someone posted the instructions from Geno's are/were wrong. Snoking

 

[monkeyman]

Strange thing is TPS voltage shows low, but from my knowledge when P pumped it only controls lock up, not sure, however governor pressure shows zero then jumps to 50 right away causing stacked shifts, my next thing will be doing testing in all electrical, thanks for reply, I have been e-mailing with Tim also

 

[JR]

When my PCM went bad no OD, when my trans guy hooked up his scanner it wouldn't even connect to the truck. Sounds very similar to what your experiencing.

 

[monkeyman]

Thanks, he finds pressure jumping to soon with new parts, there's a guy on e bay who rebuilds them for $169.00, was yours stacking shifts also?
Rick

 

[monkeyman]

update, sent PCM to SIA electronics and they found the chip that sends signal to Solenoid and controls my fuel gauge burned out! repaired and on its ways back! $132.00!!

 

[DavidC]

Million dollar question. Did it burn out from age or is there another problem that caused it.

Dave

 

[monkeyman]

according to the tech, her has about three more to do same problem, unplugging and plugging back in with batteries connected, bent pins or sockets shorted, working on valve body solenoids with batteries connected, etc

 

[DavidC]

according to the tech, her has about three more to do same problem, unplugging and plugging back in with batteries connected, bent pins or sockets shorted, working on valve body solenoids with batteries connected, etc

Thanks, good info for everyone to know.

Dave