Torque Converter Diagnosis: Notes
WARNING: This page is about a different car, the 2003 Mercury Sable and 2003 Ford Taurus. However, it is still accessible from the selected car via links, so may be relevant.
Prior to installing a new or remanufactured torque converter, all diagnostic procedures must be followed. This is to prevent the unnecessary installation of a new or remanufactured torque converter. Only after a complete diagnostic evaluation, can the decision be made to install a new or remanufactured torque converter.
Begin with the normal diagnostic procedures as follows:
- Preliminary inspection
- Know and understand the customer's concern
- Verify the concern-carry out the Torque Converter Operation Test. For additional information, refer to TORQUE CONVERTER DIAGNOSIS .
- Carry out the diagnostic procedures:
- Run on-board diagnostics. For additional information, refer to DIAGNOSTICS .
- Repair all non-transaxle related DTCs first.
- Repair all transaxle DTCs.
- Rerun on-board diagnostic to verify repair.
- Carry out the Line Pressure Test. For additional information, refer to SPECIAL TESTING PROCEDURES .
- Carry out the Stall Speed Test. For additional information, refer to SPECIAL TESTING PROCEDURES .
- Carry out the diagnostic routines. For additional information, refer to DIAGNOSIS BY SYMPTOM .
- Use the index to locate the appropriate routine that best describes the symptom(s). The routine will list all possible components that may cause or contribute to the symptom. Check each component listed, diagnose and repair as necessary, before installing a new or remanufactured torque converter.
- Run on-board diagnostics. For additional information, refer to DIAGNOSTICS .