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?

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・Fair and transparent pricing

Get a quote

What others are asking

Q: Low idle and stops, sometimes stalls at idle.

As you know, the idle air control valve reads the air intake as it is mixed with fuel prior to being injected into the engine at low speeds and at idle. As this valve is controlled by the vehicle's computer,...

Q: Transmission 2nd gear not engaging properly.

The transmission may need to have the linear control solenoid and spring replaced due to a broken spring and clogged passages in the transmission and solenoid. If after flushing out the passages and replacing the parts it still has shift...

Q: The security light keep coming on the security is in the ignition switch I need 2 get it replaced and program with new key

Hi Willis. Thanks for contacting us today. If you are experiencing a security light when you turn the ignition key, the issue is that you have an error code stuck in the ECU that would need to be removed after...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
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...
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...