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.





4. Using a small screwdriver, press on the check ball and make sure it moves freely inside the check valve. Refer to Figure 2.

5. Replace the converter drainback check valve if the ball does not move freely.

6. All internal transmission components and the torque converter must be checked for damage. Follow the Disassembly, Subassembly, Cleaning/inspection, and Reassembly procedures as outlined in the Service Manual, Section 07-01A, and service as required.





Parts Block

OTHER APPLICABLE ARTICLES: NONE
WARRANTY STATUS: INFORMATION ONLY
OASIS CODES: 503000, 510000