Auxiliary Air Valve (Idle Speed): Description and Operation

Air Regulator:

Air Regulator Operating Graph:

PURPOSE
Provides a means for increased idle speed when the engine is cold.

LOCATION
At the front of the intake manifold.

OPERATION AND CONSTRUCTION
The regulator allows air to by-pas the throttle valve, thereby raising idle speed. The regulator contains a temperature sensitive electric element that causes the air bypass to close gradually as the engine warms up. When the engine has run for approximately five minutes, the valve should be fully closed.

The air regulator is energized through the fuel pump relay and not directly controlled by the ECM.