Q: Intermittent high revving

asked by on

My car is revving high intermittently. It occurs during idling and when I first start the car. These days, the RPMs go as high as 2250 on average. The RPMs would decrease to around 1100 when I put it in reverse or drive. It would start revving very high again if I put it in park or neutral. Then, the RPM would go over 2000. The RPM while idling in drive goes to 1100. The issue seems to occur when the weather is colder. What could be wrong?

Hello there, thanks for writing in about your 2004 Chevrolet Aveo5. While a revving engine is not a normal operation, there are a few common causes for this type of fault. The most common are a vacuum leak, oxygen sensor, MAF sensor, exhaust leak, or a throttle plate that is stuck. Have the intermittent high revving issue diagnosed by a certified mechanic, such as one from YourMechanic.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. Intermittent high revving

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: Horn is extremely sensitive after putting it back in the steering wheel.

Hi there. See if the springs were installed properly to the horn. Also, check to see if the wiring to the horn was tight and not loose. A return spring on a horn button will sound the horn sooner with...

Q: How does the auto-reverse function work with power windows?

The power windows of your car are equipped with an auto-reverse feature. It’s designed for safety (pinch protection) – think of the doors in an elevator, or how your garage door will automatically reverse if something breaks the sensor beam....

Q: Hold light and engine light flashing, car shaking.

Hi there. You might want to have a professional mobile mechanic come to your location and complete a check engine light inspection to determine what is causing these warning lights to come on. When a sensor discovers a fault within...

Related articles

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...
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.