What is an idle air control valve (IAC)? 2 Articles

by Douglas Black

The automobile engine is a perfect balance of science and mechanical engineering. Each part is carefully designed to interact with one another in a perfect synchronous harmony to produce a means of transportation. One very...read more

by Anthony Chilbert

An idle air control valve is an electronic motor which adjust idle speed. The IAC valve is usually mounted to the throttle body. Some cars don't have IAC valves, instead they have a mass air flow sensor. An IAC valve is...read more