Q: Replaced the PCV valve and now the car is not shifting properly?

asked by on

The car was make a loud whistle so I changed the PCV valve and the whistle went away and now it doesnt shift properly. What would cause this?

You will need to be more specific on what the shifting is doing and if the transmission is automatic or manual. Also if check engine light is on then have the computer tested for codes and have the codes diagnosed to see if you may have knocked something loose or did not get the intake hose back on correctly. If the problem did not start until after you worked on it then go back over every where you worked and look for loose or broken components, connectors or vacuum hoses. If after all these checks still cannot find issue then seek professional help like a mechanic 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. Replaced the PCV valve and now the car is not shifting properly?

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: Why is my car shaking in the floor and the seat, in park reverse and drive/idle

Hi Christina. Thanks for contacting us tonight. Most of the time, a vibration like you are describing is caused by either a loose vacuum line or a worn out engine mount. With your vehicle being 2011, it's quite possible the...

Q: Why would the battery and brake light come on for no reason as well as the transmission jerking when accelerating from first to second?

Hi there. Your alternator may not be working properly. If so, turn off all the lights and have the engine running at night. Then from an idle condition, rev up the engine. If the brake and battery light become brighter,...

Q: Hi is it possible to confuse a faulty fuel pump with a faulty throttle body on a VW Tiguan (Australian model)?

Hi there. To see if the fuel pump is working properly, install a fuel pressure gauge on the fuel rail with the fuel system in a closed loop and have the gauge visible to the driver with the hood shut....

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
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...