What is an air control valve and how do you know when it is failing?

Thank you for reading this post, don't forget to subscribe!

Once your car warms up to normal operating temperature, it should run in a smooth, consistent line.

On the other hand, if the line isn’t smooth and consistent, your car is telling you there’s a problem you need to fix. Idling problems can often, but not always, stem from a faulty or clogged idle air control valve. Which can cause your vehicle to run smoothly.

What is an air control valve?

There aren’t many auto parts that have a name as accurate as the idle air control valve. It is a valve or device that opens and closes to release the flow of air or fluid (air in this case) to the engine.

What is the job of an air control valve?

The idle air control valve controls the air required to maintain a constant idle speed. It essentially acts as a bypass for the throttle body plate.

What is car idling?

Idle speed is the speed at which the engine runs while the car is running without any throttle input. Idle speed is displayed in revolutions per minute (RPM) on the dash tachometer.

Simply put, when you are parked and start the car, the vehicle is idling.

What is a normal idle?

The typical consumer car will idle somewhere in the 500-1000 RPM range, depending on the vehicle. It can also start at higher RPM, between 100 and 300 RPM, before slowing down to its normal operating speed.

Consult your owner’s manual to find the specific normal speed for your vehicle.

Performance cars may have higher idle speeds and motorcycles have idle speeds ranging from 2,500 to 4,000 RPM.


It may interest you:

3 Reasons Your Air Bag Dash Light Is On
Everything you need to know about Electronic Stability Control in new cars