A/T - THM 200C In Reverse Range Engine Stops Running
TSB 85-47SUBJECT: THM 200C
PROBLEM: Engine stops running when in reverse range.
CAUSE:
This condition may be caused by transmission fluid leaking across the pump gear causing the [1][2]torque converter clutch to engage. This can be aggravated by hot transmission oil, high line pressure demand, low idle speed, and large pump drive gear side clearance.
SOLUTION:
Install service package part # 8638951, which contains a pressure regulator valve, part # 8638950. (see illustration)