Idle Air Control Valve
- Idle Air Control (IAC) valve is located below left side of air cleaner. IAC valve by-passes air around throttle valve and directly into intake manifold. Air is allowed to pass through IAC valve when valve is energized by ECM.
- IAC valve is energized whenever idle speed drops to less than desired RPM due to engine load (i.e., electrical, P/S, A/T in Drive, etc.). IAC valve is energized each time engine is started and during periods of deceleration to compensate for rich mixtures caused by a fully closed throttle. Other information is not available from manufacturer.