Severity: Fix within days. Drive with caution and watch for new symptoms.
The engine is idling faster than the computer wants, which usually means too much air is getting in at idle.
Check for vacuum leaks first, then clean the throttle body and test the idle air control valve.
The car may creep forward at stops and use more fuel. Drivable with care.
You can drive short distances carefully; watch for worsening symptoms. The car may creep forward at stops and use more fuel. Drivable with care.
The most common causes are: Vacuum leak; Dirty throttle body; Failed idle air control valve; Stuck-open throttle; Faulty coolant temperature sensor. A scan tool and a visual check of the parts above is where a technician starts.
Check for vacuum leaks first, then clean the throttle body and test the idle air control valve.
