Cleaning & Inspection

WARNING: This page is about a different car, the 2003 Pontiac Sunfire and 2003 Chevrolet Cavalier. However, it is still accessible from the selected car via links, so may be relevant.

If using the original IAC valve, perform the following inspection and cleaning procedure:

Clean the IAC valve sealing surface, pintle valve seat and air passage in the throttle body.
Whenever the air passages have heavy deposits, remove the throttle body for a complete cleaning. See THROTTLE BODY .
The IAC valve may be cleaned by using a shop towel or small parts cleaning brush to remove heavy deposits.
Shiny spots on the pintle or seat are normal, and not an indication of a misaligned pintle shaft.
Check the IAC valve seal for cuts, cracks or distortion. Replace the IAC valve if the valve is damaged.