Q: Why is newly replaced brake booster making a whistling noise and brake pedal staying depressed?

asked by on

OK I replaced the brake booster and now when I push brake pedal down it sticks and a whistling sound comes from somewhere around the booster itself.

Hello, it sounds like you have a bad run with parts. That booster is leaking internally. It has nothing to do with installation. You need to get another booster, may be a different brand. Make sure your vacuum hose to booster is in good shape.

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. Why is newly replaced brake booster making a whistling noise and brake pedal staying depressed?

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: Whining noise. 1999 Chevrolet Tahoe

Hi there. If you are only hearing the noise in those speed ranges, then you may have bad overrunning clutch needle bearings inside the transmission. In this case, the transmission will need to be overhauled and repaired. If you would...

Q: Q: Car stuck in Park

I would check and see if the brake lights are working. If the car will not shift out of Park and the brake lights do not work, this usually means that the brake interlock switch is faulty, and needs to...

Q: Calipers keep locking up even after replacing.

You need to have the brake master cylinder checked to see if the brake booster actuator pin is not adjusted correct and causing the brake master cylinder to hold partial pressure to the calipers. The caliper slides should also be...

Related articles

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...
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.