Skip the auto shop - Our mechanics make house calls

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.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Hi Tim, what should I expect to pay to have the right front output seal replaced on my 2001 infinity g20

Hi Nancy. It really depends on where you have the CV axle shaft assembly replaced. If it's completed by a local mechanic shop, prices can range anywhere from $250 to $400, dealerships tend to charge 30% more in most cases...

Q: Car won't turn over

The description "raspy" makes me think of grinding. A grinding sound when cranking usually points to a worn flywheel. The flywheel is a giant gear that is usually between your engine and your transmission. This is what the starter engages...

Q: Something dragging under car

Hi. There are quite a few parts that can become loose and drug under the vehicle. Most of the time it is the skid plate under the front of the car. This plastic part will become loose and then drag...

Related articles

How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.