Q: Q: Car idling high

asked by on

My car is idling too high. The transmission won't go into a lower gear.

The problem you are experiencing may be the vacuum modulator leaking in the transmission. The vacuum leak will cause the engine to idle high and the transmission will not shift correctly. The vehicle should be tested for any problems with the transmission and engine which can effect one or the other. I recommend having a mechanic scan and test the engine and transmission for codes, and the modulator valve. This will need to be done in order to diagnose and repair of your high idle problem.

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. Q: Car idling high

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: AC stops working when idling

It is possible that your compressor clutch is producing more drag than usual, causing the near stall at idle. When the engine RPM is raised, the belt rotates faster, forcing the compressor to spin. It is also possible that...

Q: Description of Problem: clutch master cylinder leak 1993 Ford Ranger

Hi there - your clutch fluid line leak may be a problem with the connector thread for either the master cylinder itself, or the fluid line going to the slave cylinder. I recommend a fluid leak inspection performed by a...

Q: Convertible top clunking

Hi there. The hinge mechanism is a common problem with these convertible tops. Your hinge may be worn out or another part of the hinge may be damaged. I recommend you have a mechanic, like one from YourMechanic, inspect your...

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...
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...
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...