Asked in Chevy Colorado
Where is the Idle air control valve for a 2005 Chevy Colorado?
December 21, 2008 4:38AM
The idle air valve is a small silver colored cylinder which
bolts onto a manifold that bypasses the air throttle assembly.
It is on the right side of the engine (looking from the front).
Follow the air duct from the air cleaner to the throttle assembly.
If you remove the connector, it should have four terminals.
This is s stepper motor valve. The ECM drives the valve full
closed at startup then opens the valve a predetermined number
of steps (this will be either the computed idle point or the
default startup point if the ECM memory has been cleared). The
engine idle speed will then be monitored and the final operate
point determined. The valve and motor are about one inch in
diameter and just less than three inches long.