Additional Checks

Check the exhaust system for any possible restrictions.

• See EXHAUST RESTRICTION under EXHAUST SYSTEM CHECK under EMISSION SYSTEMS & SUB-SYSTEMS in SYSTEM & COMPONENT TESTING - 3.1L CENTURY, GRAND PRIX & MALIBU article.
• Check exhaust system for damaged or collapsed pipes.
• Check mufflers for heat distress or possible internal failure.
• For possible plugged catalytic converter.
• Check for proper Torque Converter Clutch (TCC) operation. Check the Torque Converter Clutch (TCC) operation. See appropriate DIAGNOSIS article in TRANSMISSIONS.