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torque converter solenoid grounded with key off


broncobuckinaround

Well-Known Member
Joined
Sep 24, 2012
Messages
432
Vehicle Year
07/86
Transmission
Manual
with key off engine off the tcc circuit/wire which is pin 53 on the main computer connector. has ground, which is computer controlled.

the pcm is grounding the solenoid just after take off and the torque converter is locking up.

nothing ive done is helping, new engine harness, pcm swap, speed sensor, tps.
heard that cruise control can make it mess up. but i cant find any issues with that. and i have no idea how to test the cruise module.

whats really strange is if i unplug the connector at the trans for tcc its still grounded. also, while i touch the wire with the test light the fuel pump relay clicks. some how thats connected. i dont know if that is supposed to happen.

what could be sending the info needed for the pcm to make the ground. key off engine off and key on engine on.

makes me wish i could open the pcm and there be a diagram in there to look at. lol
 
well i looked and looked. found nothing today. so i hooked a switch to it. just have to remember to shut i off when i stop. and itll give me time to set up a m50d and 4.0 swap.
 

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