Air Injection System: Description

The air injection system adds a controlled amount of fresh air to the exhaust gases at the exhaust manifold, or downstream to the catalyst to aid in oxidation of the exhaust gases. This results in reduced levels of carbon monoxide (CO) and hydrocarbon (HC) emissions.

The 5.2L system consists of a belt driven air pump, a switching/relief valve, relief valve solenoid, hoses, and check valves.