mushy brakes - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 04-11-2003, 08:45 AM   #1
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Default mushy brakes

The brake pedal on my 95 SSEi sinks slowly to the floor whenever I use it... I checked both calipers and both wheel cylinders last night and they were bone dry all around, Furthermore I'm not loosing any fluid... could this be anything other than a bad master cylinder? I just put a new one in two months ago so I really don't want to believe I have to replace it again.

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Old 04-11-2003, 09:27 AM   #2
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Default Re: mushy brakes

Quote:
Originally Posted by Robbie Knobbie
The brake pedal on my 95 SSEi sinks slowly to the floor whenever I use it... I checked both calipers and both wheel cylinders last night and they were bone dry all around, Furthermore I'm not loosing any fluid... could this be anything other than a bad master cylinder? I just put a new one in two months ago so I really don't want to believe I have to replace it again.

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If that Master Cylinder was a "Rebuilt" one instead of a "New" one BELIEVE IT! 99% of the rebuilt ones are crap & don't last long.
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Old 04-11-2003, 11:30 AM   #3
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could there be air in the lines? you might need to bleed your brakes?????......
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Old 04-11-2003, 05:53 PM   #4
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I would bleed them first...but secondly...are your pads/shoes wore...as they wear down it creates more space between pads n/rotors...so maybe replace them..AND bleed...did this to mine...STOPS great...HARD pedal
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Old 04-12-2003, 02:36 AM   #5
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Rat'* got it, ur clyinder is bad several weeks ago mine did tha same exact thing,
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Old 04-12-2003, 11:46 PM   #6
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Thanks for the replys, guys... I appreciate the input. I should have mentioned that it'* not the 'air in the lines' type mushy, it'* the 'loosing fluid somewhere' type mushy. The front pads are as new as the master cyl, which is to say just a few months, and the shoes are less than a year old (8,000 miles).

So I guess Rat is right, I got a bum master cylinder... now if only I could find that reciept...
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Old 04-13-2003, 12:34 AM   #7
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All in favor of Master Cylinder? Aye. Aye. Aye. Aye.

The Aye'* have it, another "Rebuilt" P.O.*.

Rebuilt is autopart jargon for "washed thouroughly"
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Old 04-13-2003, 12:18 PM   #8
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Quote:
Rebuilt is autopart jargon for "washed thouroughly"
Not only did they wash it thouroughly, but they painted the seals shiney black... but that'* OK, 'cause it only cost $95
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Old 04-13-2003, 01:31 PM   #9
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Something somewhat like that happened to me, but I was leaking brake fluid. I had to get a whole new brake system, including the master.
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