Skip the auto shop - Our mechanics make house calls

Q: Can't stop when pressing the brake pedal

asked by on

The brake pedal is not allowing me to stop. In addition, the RPMs are idling between 1,000 and 2,000 when the car is in park.

A: It sounds as though your brake booster, whi...

It sounds as though your brake booster, which facilitates power assist, is not operating. The brake booster operates from the engine vacuum; if the engine vacuum is leaking somewhere, then the power assist will not work, and your engine will rev higher to attempt to stay running. Typically, you will hear a hissing noise from the engine compartment or brake pedal with a vacuum leak. A visual inspection, and possibly a smoke test with a leak detection machine, would be required, in this case.

A diagnostic inspection of your brake system from a qualified technician, such as one from YourMechanic, can help determine the issue and find the best path to repair.

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

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: Driver side door lock button not working, and passenger side sliding door makes a buzzing noise

Hi there. These door issues are common on this vehicle. Most of the time the main issue is the master door lock switch on the driver door. It sounds like you already replaced that. As for the sliding door problem,...

Q: Engine light came on saying transmission system malfunction.

Hi there. The code is coming up for the torque converter clutch (TCC) is not working. Check the TCC fuse and see if it has blown. If the fuse is good, then the solenoid on the transmission that controls the...

Q: Original and replacement brake pedal feels softer the longer the SUV is driven

I am not aware of a change over of the brake booster from a vacuum style to an electrical style. This may be a new recall that I am not aware of, and I cannot comment on an ongoing recall...

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...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
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...