Q: Hey when the car idles it revs up and down by like 300 revs or so and also when the car is off it doesn't recognize its in park.

asked by on

When I switch off the car (it's push to start) the car doesn't recognize its in park so when I get out the car keeps beeping and I have to disconnect the battery to stop it , what do you think could be the cause of this also with the transmission revving up while idling?

My car has 155000 miles.
My car has an automatic transmission.

The issue is the transmission position sensor is not working properly and registering that the transmission is in drive, neutral, or reverse. Check to see if the transmission is going into park when the shifter is in park. If the transmission is going into park, then the sensor is not working and needs replaced. If the transmission is not going into park, then the shifter cable may be broken or out of adjustment. If you need further assistance with transmission not going into park issue, then seek out a professional, such as one from Your Mechanic, to help you.

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. Hey when the car idles it revs up and down by like 300 revs or so and also when the car is off it doesn't recognize its 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: Car stuttering when starting and low gas mileage

Claimed by Tim Charlet

Q: My car had electrical damage due to rodents and needs dash harness replaced. How long does a harness replacement typically take?

The wiring harness in the dash would need to be repaired most likely since the new harness would not be available anywhere. The labor will be on a time and materials basis and most mechanics would not want to take...

Q: My 2004 mitsubishi dalmante will start but wont go into gear

Hello, thank you for writing in. Transmissions tend to show these types of issues when the transmission fluid is low, contaminated, or burnt. You should start with checking and changing the fluid first. From there look into transmission solenoids, the...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
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.