Skip the auto shop - Our mechanics make house calls

Q: Car revs and accelerates without the gas pedal being pressed

asked by on

As I was driving my car down the street, I noticed that it began to feel weird after about three minutes into the drive. While stopped, with my foot on the brake, I could hear the car engine revving as if I was trying to accelerate the car. It happens at 2 second intervals in between. With my foot off the brake, the car starts to accelerate itself to 20 mph in a fashion similar to using cruise control going uphill.

My car has 172600 miles.
My car has an automatic transmission.

A: This is a common problem when the idle air ...

This is a common problem when the idle air control module is not functioning as it should. This is a component that helps to monitor air/fuel mixture at idle speed. When this is not working properly, this causes an imbalance in the air/fuel mixture resulting in intermittent or abnormal idling as you've described. This could be a known problem by the manufacturer so you may want to contact the dealer to see if this is anything that is covered. If you would rather not get in touch with the dealer, I would recommend having an expert from YourMechanic come to your home to diagnose the revving concern and proceed with proper repairs.

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

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: Interior lights don't come on when opening door

Hello. There should be a switch located on the interior light of your car that has a switch to operate the lights when the door is opened or closed. The symbol that is most commonly used to indicate the location...

Q: Major electrical problems.

Hi, thanks for writing in. You should check for water intrusion to the interior of the vehicle. Pull the carpeting up on both the driver's and passenger side front. There are many computers in these cars that some are located...

Q: Check engine light comes on intermittently

If the Check Engine Light is coming on then it would have set a code. The code may have been read, but a problem is not found or the mechanic could not find the problem. I would need to know...

Related articles

How to Renew Your Car Registration in Oklahoma(DELETED)
Having your car registered with the Oklahoma Tax Commission is an important part of driving legally in this state. You will need to do this within 30 days of moving to Oklahoma...
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...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...