Sable V6-183 3.0L DOHC VIN S MFI (1997)
OASIS CODES: 501000, 502000, 503000, 504000
Diagnostic Procedure
Prior to torque converter replacement, all diagnostic procedures must be followed. This is to prevent the unnecessary replacement of good torque
converters. Only after a complete diagnostic evaluation can the decision be made to replace the torque converter.
The normal diagnostic procedure is as follows:
1.
Preliminary inspection.
2.
Know and understand the customers concern.
3.
Verify the concern:
-
Perform the Torque Converter Clutch Operation Test
4.
Perform diagnostic procedures:
a.
Run On-Board Diagnostics
-
Repair all non-transmission-related Diagnostic
Trouble Codes (DTCs) first.
-
Repair all transmission DTCs.
-
Rerun On-Board Diagnostic to verify repair.
b.
Perform Line Pressure Test
c.
Perform Stall Speed Test
d.
Diagnosis by Symptom Routines - 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 service as required, before
servicing the torque converter.
Replacement
The torque converter must be replaced if one or more of the following statements are true:
^
A torque converter malfunction has been determined based on completed diagnostic procedures
^
A converter stud(s), impeller hub or bushing is damaged
^
If there is discoloration of the torque converter (due to overheating)
^
The torque converter is found to be out of specification when performing the following checks (as applicable):
1.
Torque Converter One-way Clutch Check
2.
End Play Check
3.
Stator-to-Turbine Interference Check
4.
Converter Leakage Check
5.
Stator-to-Impeller Interference Check
^
If there is evidence of transmission assembly or fluid contamination due to the following failure modes:
Torque converter Replacement Policy Failure Modes Major metallic failure
Multiple clutches or clutch plate failures
Sufficient component wear which results in metallic contamination
Torque Converter & Transmission Cooling System Cleaning
