Brake problems - GM Forum - Buick, Cadillac, 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.

Brake problems

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Old 09-07-2005, 03:41 AM
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Default Brake problems

I have noticed lately that my brake pedal seems to almost go to the floor sometimes only while im already stopped. It is extremely hard to keep the car stopped at a light for more than a few seconds, unless I push the pedal WAY down. It will pump up if I keep hitting the brakes repeatedly. I dont think its air in the lines because it has never done this before. It also seems to do it while im turning sharply and braking (like pulling into a parking space). BTW, the fluid level is full.

Any thoughts?? Im afraid im gonna rear-end someone at a light or somethin.

Thanks!
Ryan
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Old 09-07-2005, 03:46 AM
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i suspect you have a caliper or brake drum piston thingy that sprung a leak. take a look under your car, at the backs of the tires, and see if you see any wet stuff on one.

you may also have a blown master cylinder, if this is the case, you should see wet around the unit. i would check the wheels though, something like that happened on our Chrysler E-class. the brakes worked fine at first, and then would drop after you stopped and everything. this was also accompanied by the brake light. is this true?
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Old 09-07-2005, 03:55 AM
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That'* an internally leaking master cylinder. Make sure you bench bleed the new one.

And don't drive the car until you fix it
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Old 09-07-2005, 08:30 AM
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Agree with Dame.. sounds exactly like a master cylinder. Most times you will not see a master cylinder leaking. It will only exhibit the symptoms you mention and scare you daily until it is fixed.
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Old 09-07-2005, 12:34 PM
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Originally Posted by BillBoost37
Agree with Dame.. sounds exactly like a master cylinder. Most times you will not see a master cylinder leaking. It will only exhibit the symptoms you mention and scare you daily until it is fixed.
also i want to add that general when a master cylinder leaks you dont lose a whole lot of fluid
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