Idle Air Control (IAC) Valve
To maintain proper idle speed, the IAC valve controls the amount of air by-passing the throttle body. The PCM determines appropriate idle speed according to various inputs and sends a voltage signal to IAC valve.
To maintain proper idle speed, the IAC valve controls the amount of air by-passing the throttle body. The PCM determines appropriate idle speed according to various inputs and sends a voltage signal to IAC valve.