Skip the auto shop - Our mechanics make house calls

Q: RPM problems

asked by on

My throttle is always stuck at around 1500 and never drops I had the throttle body cleaned and it's never ran right after that. Do you have any suggestions?

My car has 60 miles.
My car has an automatic transmission.

Hi, thanks for writing in. This may be related to couple of things such as a vacuum leak or potentially an improperly adjusted throttle plate screw. When a vacuum leak is present in an engine, it can cause an imbalance in the air/fuel mixture which can cause the engine to race or surge at a higher RPM than normal due to the excess air flow. The same effect is also similarly true when the throttle plate is incorrectly adjusted. This is a plate inside the throttle body that remains slightly open to let just the right amount of air in at idle to maintain the proper air/fuel mixture. When this is incorrectly adjusted allowing too much air in, this will also cause an imbalance in air/fuel mixture, again causing the motor to race or surge at a higher RPM. I would suggest having an expert from YourMechanic come to your home to diagnose and correct your high idle issue.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!
  1. Home
  2. Questions
  3. RPM problems

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: Vehicle idling rough once warm

This might be due to a vacuum leak. Vacuum leaks are common in older vehicles because of the age of rubber lines, gaskets, etc. The vacuum leaks alter the air fuel mixture and as the engine tries to adjust it,...

Q: Right front ball joint excessive play and needs to be replaced. 2009 Nissan Versa

Hello - yes, the Recall was for front spring issues. While it is not common for ball joints to fail at your mileage, many factors come into play: potholes and road conditions where you drive, stop and go vs smooth...

Q: wheel alignment

Hello, thanks for writing in. I will be happy to assist you with your concern about whether a wheel alignment must be performed after the installation of sway bar links in the front and shock absorbers in the rear of...

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 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...
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.