Skip the auto shop - Our mechanics make house calls

Q: High idling on cold start

asked by on

My car has been idling very high. It happens when the engine is cold and during bad weather. It would start revving in the 1900-2100 RMP range and it would go on like that until I let it warm up for several minutes. Then I would put it in gear and press the brake pedal hard in order to decrease RPMs. I went to the dealership and they had the computer reprogramed, which helped a bit. However, the problem hasn't been solved. What should I do?

A: Hi there thanks for writing in about your 2...

Hi there thanks for writing in about your 2006 Lincoln Zephyr. This sounds like a failing idle air control valve issue. If this is confirmed, and the valve is replaced, there is also a ’relearning" process for the engine management computer (ECM) which should be followed so the ECM can calibrate itself to the new valve. If you need help having this looked at, a certified professional from YourMechanic can inspect the high idle and let you know how to best proceed.

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

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

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: Engine won't start after running it for ten minutes - 2001 Nissan Frontier

Hey there. This suggests possibly a lack of fuel pressure getting to the injectors. This can happen when the fuel pressure regulator is not maintaining the required fuel pressure in the system consistently. This may also be a result of...

Q: Stuck in park no brake light I replaced brake light switch with no luck.Fuses good .Someone said their is another switch besides

You need to look to see if you are getting brake lights? If no lights even after replacing switch and checking fuses then you most likely have a broken wire at the brake light switch connector. Replace connector at brake...

Q: SUV won't always start even after battery replacement

The starter may be the issue, or you may have a cable issue. Some vehicles also may have a problem with the neutral safety switch that will not let the starter crank the vehicle if it is not in park...

Related articles

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 P0052 code means This code is seen when the Engine Control Module (ECM) tries to control the...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.