4.2L Air Injection Diverter Valve Pictures (A.I.R.)

The AIR diverter valve has an electronic solenoid mounted on the valve. The resistance of the solenoid is 4-7 ohms and the current draw is 2-3.5 amps. The solenoid opens the shut-off valve when battery voltage is applied to the valve. Once opened, pressurized air from the AIR pump flows past the check valve and is directed into the bank 1 exhaust manifold through an outlet pipe. The shut-off valve prevents fresh air from being drawn into the exhaust manifold by providing a positive seal when the AIR system is inactive. The solenoid, valve, and outlet pipe are serviced as an assembly.

Seconady air injection (AIR) system and diverter valve description and operation. A.I.R. valve is used on Chevy Trailblazer, GMC Envoy and Oldsmobile Bravada 4.2L engine.

1. Electrical Connector
2. Engine Mounting Surfcace
3. Outlet Air Hose


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