Idle Control Solenoid Valve

When idle speed is reduced due to electrical or other loads on engine, this valve opens to by-pass additional air into intake manifold. This additional air will allow idle speed to increase to normal speed (700-800 RPM).

Operation depends upon changes in voltage at FR terminal of alternator for quicker response. After coolant temperature has reached 104°F (40°C), this valve lowers fast idle speed in steps during engine warm-up.

To prevent erratic running after engine first starts, valve is opened during cranking and immediately after starting to provide additional air into intake manifold.