Brake booster issue

Tiny
FOURSTARCHEF
  • 1997 GMC JIMMY
  • 10,854 MILES

Is it possible for a brake booster to fail without any residual fluid leaking

Do you
have the same problem?
Yes
No
Monday, August 6th, 2012 AT 8:15 PM

6 Replies

Tiny
KHLOW2008
  • EXPERT
  • 41,974 POSTS

You must be refering to the master cylinder. Brake booster is vacuum operated and does not use any fluids. Yes, master cylinders can fail internally with minimal or no leakages.

Was this
answer
helpful?
Yes
No
Monday, August 6th, 2012 AT 8:24 PM
Tiny
RASMATAZ
  • MEMBER

Yes, What is it doing? Try this while engine is off-pump brakes a few times hold in and then start car-did the brake pedal drop inward?

Was this
answer
helpful?
Yes
No
Monday, August 6th, 2012 AT 8:24 PM
Tiny
FOURSTARCHEF
  • MEMBER

It's giving the hissing noise when the pedal is depressed. It's like stopping a non PB vehicle. The abs motor, is functioning correctly(it's pushing back on the pedal when brakes are applied)I see no fluid leakage anywhere. Fluid is a bit dirty, but still where it belongs. Valve on the manifold, and booster work fine, no leaks in the vacuum hose. A true quagmire

Was this
answer
helpful?
Yes
No
Monday, August 6th, 2012 AT 8:44 PM
Tiny
RASMATAZ
  • MEMBER

The brake booster diagphram has ruptured

Was this
answer
helpful?
Yes
No
Monday, August 6th, 2012 AT 8:47 PM
Tiny
FOURSTARCHEF
  • MEMBER

So, that being the case. Why can't I find a rebuild kit for it. If you can buy rebuilt boosters from auto stores, someone has to sell the kits

Was this
answer
helpful?
Yes
No
Monday, August 6th, 2012 AT 8:50 PM
Tiny
RASMATAZ
  • MEMBER

You have to replace the brake booster-I don't think it comes with a rebuild kit-

Was this
answer
helpful?
Yes
No
Monday, August 6th, 2012 AT 10:24 PM

Please login or register to post a reply.

Other Booster Leak Questions