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Brake pedal will sink

Tiny
AUSTIN HALFORD
  • MEMBER
  • 1994 CHEVROLET CAVALIER
  • 2.2L
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 90,000 MILES
The car will roll about an inch or two, then the brakes will catch. If I let my foot off the brake and press back down it is back to normal. Looked for leaks but found none.
Wednesday, April 10th, 2019 AT 12:35 PM

1 Reply

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,747 POSTS
Welcome to 2CarPros.

If the brake pedal slowly goes to the floor, there are no leaks, and the brake fluid is full, my first suspect is the master cylinder (MC). In the master cylinder there are plungers. Over time, they wear and even get brittle. As a result, brake fluid is able to bypass them and the pedal will drop. However, most times you can pump the brakes and get a pedal again.

Take a look through this link:

https://www.2carpros.com/articles/brake-pedal-goes-to-the-floor

If you decide to replace the master cylinder, here is a link that shows how it is done:

https://www.2carpros.com/articles/how-to-replace-a-brake-master-cylinder

Let me know if this helps or if you have other questions.

Take care,
Joe
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Thursday, February 25th, 2021 AT 9:48 AM

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