Q: Car revs up and down when in park

asked by on

When thr car is in park the engine revs uo amd down

My car has 126000 miles.
My car has an automatic transmission.

The first thing you want to look for is air leaks. Any air that gets into the engine without passing through the throttle is going to cause a high idle. When the idle reaches a certain limit, the injectors shut off until the idle drops below that limit. then the cycle begins again. If you don’t find an air leak, then the problem will likely be in the throttle position sensor or the throttle itself. Diagnosing those will require some special equipment. You can get this thing checked out at your convenience by contacting Your Mechanic. They can send a technician to your home or office to check out your Nissan Idling problem and let you know what it will take to fix it.

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. Car revs up and down when in park

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: Cvt is shuttering on take off from a stop. Forward and reverse. Is it done for.

Hi there. That is definitely one of the signs that the CVT transmission is having issues. However, without a proper inspection it would be difficult to determine if the transmission assembly is in need of replacement or if there are...

Q: Do I need a new outer tie rod?

Hi there. The inspection station is, or should be, physically checking your steering linkage for excessive play. It could be the outer tie-rod end does have play that exceeds specification. This is something you may not feel when driving your...

Q: Can I put a Subaru engine in my 2010 Camry SE

Hi there - I don't think swapping a Subaru into your Camry is the way to go - no disrespect to Subaru. This swap would require way too much custom machine work for the reward. Better perhaps to look at...

Related articles

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...
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.