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hissing noise at brake pedal...

  #1  
Old 03-09-2005, 03:54 PM
kaz
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Default hissing noise at brake pedal...

Hi there,

I just notice this recently, sometime when i step on the brakes brifely and let go (like in traffic jam). there's a faint hissing noise coming from my brake pedal, but if i step on the brake pedal the noise stops until i let go again....on the other hand, if i step on the pedal really hard then let go, the noise stops completely. sounds like somthing leaking?? and there's no noticeble different in braking performance and distance.... weird[&:]

FYI: I got my brakes serviced in Nov last year: new brake pads all around, drain, fill and bleed system with dot 4 fluid.

Any help will be greatly appreciated

Dan

 
  #2  
Old 03-09-2005, 04:21 PM
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Location: Orlando, Florida
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Default RE: hissing noise at brake pedal...

The diaphram in the brake booster is bad.You will need to have the brake booster replaced.
 
  #3  
Old 03-10-2005, 01:17 PM
kaz
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Default RE: hissing noise at brake pedal...

brake booster... is that the same as brake cylinder??? how much $$$ is that?? can i do it myself??

As of this morning, there's no noise coming from the pedal, and i'm stuck in traffic every morning... will this eventually affect my brake performance??
 
  #4  
Old 03-10-2005, 08:28 PM
tech's Avatar
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Location: Orlando, Florida
Posts: 36,351
Default RE: hissing noise at brake pedal...

The brake booster and master cylinder are diffrent things.If you have patiance you can do it.It is a pain you have to disconnect the battery and move the front fuse box.
 
  #5  
Old 07-07-2006, 01:11 PM
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Location: Burlington, ma
Posts: 1,129
Default RE: hissing noise at brake pedal...

Im at volvo right now and i think the service guy said it be around 750$ for it.....
 
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