The idle control valve is vital because it works with the engine control unit to adjust the amount of air going past the throttle plate. This component's operation guarantees your vehicle a smooth idle.
Idle control valve conceptThe idle air control valve (IAC) is a mechanism that is used in fuel-injected vehicles to adjust the engine's rotation speed while idling, this is also known as revolutions per minute (RPM). The IAC is a device that is controlled electrically and receives its input from the ECU. the placement of the servomotor and the amount of air going past is managed by the engine control unit.
The IAC lets the engine control unit keep the RPM at a minimum, even if there is a change in engine load. This feature is known as the anti-stall feature so you are allowed more mobility when taking your foot off the clutch or the brake.
Common problems with a faulty idle control valveA faulty idle control valve can cause erratic idle speed, engine backfires, and stalling.