Air Management System

This system helps reduce hydrocarbon (HC) and carbon monoxide (CO) exhaust emissions. Air is injected into the exhaust ports, allowing for completion of the combustion process after exhaust gases leave the combustion chamber.

When the ECM energizes the air control valve, airflow from the air pump to the valve is directed to the exhaust ports. During warm engine operation (closed loop) on all except Federal 2.8L engine, the ECM de-energizes the air control valve, diverting airflow to the air cleaner. On Federal 2.8L engine, air is diverted to air cleaner only during deceleration of the engine.