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Home >> Pontiac >> 1988 >> Firebird Base, 5.0 E, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> 1987-88 Computerized Engine Controls >> Chart C8A - 200-4R Torque Converter Clutch Diagnosis >> 200-4R Torque Converter Clutch (TCC) Diagnosis (1 Of 2) >> Diagnostic Aids

Diagnostic Aids

An engine coolant temperature coolant thermostat that is stuck open or opens at too low a temperature, may result in an inoperative TCC. If TCC engages before "SCAN" indicates solenoid or sump over temperature switch may be faulty.

Fig 1: Flow Chart C8A, 200-4R TCC Electrical Diagnosis
G7128

Using A "Scan" Tool, Check The Following And Correct If Necessary:

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