Pickup 4WD V6-180.5 2959cc 3.0L SOHC (3VZ-E) (1990)
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Auxiliary Air Valve (Idle Speed): Description and Operation
Auxiliary Air Valve
PURPOSE
The auxiliary air valve provides a fast idle during cold engine operation.
LOCATION
Mounted under the throttle body.
OPERATION
The valve controls an air bypass around the throttle plate. The amount of air allowed through the passage is based on engine coolant temperature.
