F 250 4WD Pickup V8-7.3L DSL Turbo VIN K (1994)
Torque Converter Check Valve: All Technical Service Bulletins
A/T - E4OD Vehicle Does Not Move
Article No.
94-21-14
10/19/94
TRANSMISSION - E40D - VEHICLE DOES NOT MOVE - DIAGNOSIS AND SERVICE TIPS
LIGHT TRUCK:
1990-95 BRONCO, ECONOLINE, F SUPER DUTY, F-150-350 SERIES
ISSUE:
Some vehicles may experience some of the following symptoms:
^
No vehicle movement
^
Low one-way clutch overheating
^
Transmission fluid overheated and smells "burnt"
These conditions may be caused by the check ball, located in the rear cooler line converter drainback check valve assembly, sticking.
ACTION:
Perform the following diagnosis and replace the converter drainback check valve if required.
DIAGNOSTIC AND SERVICE PROCEDURES
1.
Perform the diagnostics as outlined in the Service Manual, Section 07-01A.
2.
Perform the "Transmission Oil Cooler Flow Test" found in "Diagnosis and Testing", Section 07-01A, of the Service Manual. Service as required.
If no service is required, proceed to Step 3.
3.
Remove the cooler line from the rear transmission cooler line fitting. Refer to Figure 1.
