Skip the auto shop - Our mechanics make house calls

Q: Engine revving and surging.

asked by on

Engine revving while in neutral and the car surges when in drive without me even having my foot on the gas.

It sounds like you may be having a problem with your idle air control valve. This valve regulates the speed of the engine at idle. If it is malfunctioning or stuck you can have a high idle or surging sensation when in gear. I would ask for help from a certified mechanic, possibly from YourMechanic, to diagnose your problem and find the root cause.

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: How does the immobilizer system work?

The immobilizer system is a standard feature on all Civics, and it provides important safety and theft protection for your vehicle. Here’s how it works: The system ensures that the car will not start unless a programmed master key...

Q: Truck runs great until I get around 2,000 rims, then it starts missing and cutting out until I get below 2000 rpms

Hi there. The fuel filter could be plugged up causing the demand for fuel flow to drop making the engine starve for fuel when running at a higher speed. Check the fuel pressure on the fuel rain and run the...

Q: I added regular oil to a car which already had a synthetic blend in it

A synthetic blend refers to a blend of regular oil and synthetic oil. Adding regular oil to this oil will not in any way hurt your car's engine. You won't even have to worry about getting an oil change until...

Related articles

What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...
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.
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.