The idle air control valve (IACV) is a device attached to the throttle body that helps keep the engine of a vehicle running without throttle input, such as when the car is idling in traffic or parked ...

To check whether the idle air control valve is functioning properly, start the engine and let it run for about 10 to 15 minutes. If the valve is functioning correctly, ...

The most common culprit is carbon buildup on the throttle body, exhaust gas recirculation (EGR) valve and idle air control (IAC) valve. Here well show you how to clean an EGR valve.

A bad idle control valve can cause a multitude of issues with your car. Check out the Drive’s Garage Guide to identify the signs of a bad idle air control valve.