A/T - AOD Kills Engine In Reverse and/or Forward Gears

TSB 88-39 (Sept)

SUBJECT: FORD AOD

PROBLEM: Kills engine in reverse and/or forward ranges

CAUSE: May be direct clutches applied in gear




When applied, the direct clutch pack connects the torque converter to the planetary. If direct clutches are applied when the transmission is shifted into gear, the torque converter will be mechanically connected to the rear wheels.

Causes of the direct clutches applied in gear are as follows:

1. Direct clutch frictions welded to steels

2. Sticking 2-3 shift valve in valve body

3. Valve body or case cross-leaks

If kills engine only in forward ranges:

1. Sticking governor valve

2. Governor sealing rings worn into case

3. Valve body or case cross-leaks