Skip the auto shop - Our mechanics make house calls

Q: Car moves when I don't accelerate

asked by on

When I start it, the car moves even when I don't accelerate. It will drive itself up to 30mph without my having my foot on the accelerator. Do you think there's a malfunction in the cruise control and it's taking over when I drive without turning it on?

A: The cruise control is not the cause of the ...

The cruise control is not the cause of the high idle. It is due to the throttle control actuator, or the idle control valve is stuck. You should not try and drive it until the problem is identified and fixed.

Have a mechanic, like one from YourMechanic, come to you to diagnose the high idle problem, and fix it if possible. This way you do not have to get it towed to a shop, or attempt to drive it like that.

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・Save up to 30%

Get a quote

What others are asking

Q: I just had the harmonic balancer replaced and now the car is overheating.

Most likely the harmonic balancer is not the reason for why the car is overheating. It is more likely something to do with the cooling fan or a part of the cooling system, such as the thermostat. I recommend...

Q: Car goes into reverse, but not drive

Hi. There are a few things to check before condemning the transmission. Check the fluid level. The shifter linkage, and for trouble codes. There are not any electronics involved in reverse. If all that is ok, most likely it will...

Q: my engine in my Nissan 350z is making a ratteling noise. The thing is the check engine light does not turn on. Then it goes away b

Hello, thank you for writing in. Tracking the rattling noise will have to start by observation. Take a good look at the engine while it runs and try to get a better idea of where exactly in the engine it...

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 Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
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.