Q: Car accelerating while in park, shifts slowly.

asked by on

My car takes too long to shift gears. When in park, the car accelerates by itself.

The most likely issue here would be a faulty idle air control valve. This can cause the RPMs to rise when the transmission is in park and the engine is just idling. When the engine is not running correctly, the transmission will act differently than it normally would as well. This is sort of a cause and effect deal. I would recommend having your IAC inspected by a professional to determine if it is faulty. If so, have it replaced and see if your transmission reacts differently. If not, check the fluid level. If the fluid level is low, the transmission will also react differently.

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 accelerating while in park, shifts slowly.

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: hey, i got a 2010 mazda 3 touring. Have a lot of people had issues with them?

Hi Ryan. Thanks for contacting us tonight. Generally speaking, Mazda is an average brand in regards to dependability and reliability. Most online review websites agree with this statement. Don't get me wrong, it's a very affordable and good vehicle, but...

Q: My steering wheel tilt not working

Hi there. The tilt steering wheel function is inside the steering column and can break due to excessive use, debris inside the steering column or other mechanical issues. If the lever doesn't loosen, this could be just stuck, requiring some...

Q: My truck has a hard time starting we replaced allternator already but it still has the same issue. Could it be the starter?

You may have a starter that may be failing, which may cause the truck to start a bit sluggish. This may also be related to a faulty starter relay or some faulty wiring that may not be producing a proper...

Related articles

How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
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.