Repair Pontiac Mid-size 1974-1983 Repair Guide



Exhaust emission controls comprise the largest body of emission controls installed on your car. Included in this category are: Thermostatic Air Cleaner (THERMAC); Air Injection Reactor System (AIR, 1974-80); Air Management System (1981 and later); Anti-Dieseling Solenoid; Early Fuel Evaporation (EFE) system; Exhaust Gas Recirculation; Controlled Combustion System (CCS); Computer Controlled Catalytic Converter (C-4) system; Computer Command Control (CCC); Mixture Control Solenoid (M/C); Throttle Position Sensor (TPS); Idle Speed Control (ISC); Electronic Spark Timing (EST); Electronic Spark Control (ESC); Transmission Converter Clutch (TCC); Catalytic Converter, Electronic Fuel Control system; and the Oxygen Sensor system. A brief description of each system and any applicable service procedures follows.