isuzu Workshop Repair Guides

Isuzu Workshop Service and Repair Manuals

Fuel Delivery and Air Induction|Fuel > < Air Regulator <--> [Auxiliary Air Valve (Idle Speed)]|Specifications|Page 1527
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Air Regulator: 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.

Fuel Delivery and Air Induction|Fuel > < Air Regulator <--> [Auxiliary Air Valve (Idle Speed)]|Specifications|Page 1527