What is most likely wrong when you have a 1995 ford explorer with a Flashing overdrive off light?

Answer 1

Ford has issued a TSB on this problem. Has to do with a transmission oil pump defect and repair procedure. Article No.: 97-22-4 Date: 10/27/97 Transmission - A4LD, 4R44E/4R55E, 5R55E - Torque Converter Slip - Diagnostic Trouble Code (Dtc) 628 Or P0741 Stored In Memory Ford: 1985 to 1993 Mustang 1987 to 1988 Thunderbird Lincoln-Mercury: 1988 Cougar Light Truck: 1985 to 1990 Bronco II 1985 to 1997 Ranger 1987 to 1997 Aerostar 1991 to 1997 Explorer ISSUE: Some vehicles may experience excessive torque converter slippage, torque converter not engaging, or Diagnostic Trouble Code (DTC) 628 or P0714 stored in memory. This may be caused by damage to the fluid pump support seal and/or to the groove on the pump where the seal is located. ACTION: Inspect the fluid pump seal for damage. Refer to the following Service Procedure for details. SERVICE PROCEDURE: 1. Follow normal diagnostic procedures as listed in the appropriate Service Manual. 2. Inspect the fluid pump support for damage. If damaged, also inspect the fluid pump support seal groove on the pump. 3. If the groove is damaged, replace the pump. 4. If the groove is not damaged, replace the fluid pump support seal with a redesigned Seal (F77Z-7L323-AA). Refer to Figure 1. 5. Do not replace the torque converter unless it is damaged or fails the criteria listed in the appropriate Service Manual and/or refer to TSB 96-26-12. This is something I recommend having a Ford Dealer do since they have the experience with the job.