Skip the auto shop - Our mechanics make house calls

Q: Idling erratically.

asked by on

Idles up and down between 1500 and 2000 RPM. I was told it was the ECM.

A: There is a possibility that your ECM could ...

There is a possibility that your ECM could be causing your idling issue. However in my experience control modules do not go bad very often. The problem could be as simple as a throttle body that needs to be cleaned or a vacuum leak somewhere on your engine. To either confirm or eliminate the ECM as a problem requires special diagnostic tools and knowledge of the electrical system of your vehicle. I would recommend you ask for help from one of the highly qualified mechanics at YourMechanic to diagnose what is causing your idling problem.

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: Car won't start after driving any distance. I have to let it cool down before I can start the engine again.

It's curious that you don't seem to have a code in the ECM. Usually if you have a malfunction that prevents the car from starting, there will be a code resulting. That being said, it sounds like you may have...

Q: The only way my car will start is if the lights are on

I have seen where some alarms use the head light switch to be turned on to allow the engine to start. This is an aftermarket alarm and would need to be checked by a mechanic like one from YourMechanic to...

Q: Radiator fan

Hi There, It sounds like you may have a faulty coolant fan relay. The coolant fan relay helps to maintain the proper coolant temperature by turning on and off at specific temperature thresholds. When this relay is not working properly,...

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...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...