Dorman Idle Air Control Valve Assembly

The Dorman Idle Air Control Valve Assembly, also called an IAC valve or idle speed control valve, helps regulate engine idle speed. It controls the amount of air that bypasses the throttle plate when the throttle is closed. This helps the engine idle smoothly at start-up, at a stop, and when accessory loads such as air conditioning, power steering, or electrical demand change.

Key Features:

• Replaces a worn or failing idle air control valve to help restore stable idle performance
• Meters air around the throttle body in response to signals from the engine control module
• Helps reduce symptoms such as rough, surging, high, or low idle and stalling at stops
• Designed to match the form, fit, and function of the original part
• Backed by Dorman's reputation as a leading supplier of aftermarket automotive replacement parts

Carbon buildup and normal wear can cause an idle air control valve to stick or respond slowly. Replacing it can help restore smooth idle quality and drivability. Choose the child item that matches your application to get the correct design and connector configuration.