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Home >> Ford >> 1989 >> Bronco II RWD, Standard, M5OD-R1 >> Repair and Diagnosis >> Engine Performance >> System >> Emission Control System Description >> Description >> Air Injection System >> Conventional Thermactor Air
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Conventional Thermactor Air

The Conventional Thermactor Air injection system reduces the hydrocarbons and carbon monoxide content of exhaust gases. This gas reduction is achieved by injecting clean air into the exhaust gases.

Clean air is injected into the exhaust manifolds. During system operation, some of the air is dumped into the atmosphere to prevent excessive exhaust heat. Operation of a belt-driven vane-type air pump provides the air supply. Air control valves, check valves and various air distribution lines provide air injection.