Q: Why is my car idling high at an RPM of 1200?

asked by on

After cleaning throttle

My car has 139000 miles.
My car has an automatic transmission.

This may be caused by a dirty or failing idle air control valve/module. As you may know, this is a unit that monitors the air intake as it is mixed with fuel prior to being injected into the engine. When this is not working properly, this can cause the air/fuel ratio to be out of balance causing a spike in idling as you have experienced. I would recommend having an expert, such as one from YourMechanic, come to your location to diagnose and repair your high idle issue.

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