Anti-Lock Breaks... - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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Old 03-11-2003, 06:56 PM   #1
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Default Anti-Lock Breaks...

For some reason... they wont work, the pedal goes all the way to the floor with ease. If i push it hard enough all the way down i do get some breaking...what happened to it? My break fluid is full too, it first happened while i was at the ATM with my foot on the break and I started moving so i applied more pressure, and nothing happened till i was pressing pretty hard against the floor.

I have a 1989 SSE
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Old 03-11-2003, 07:28 PM   #2
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might be your master cylinder
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Old 03-11-2003, 08:24 PM   #3
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sounds like a master cyl to me. If it was a leak, you'd notice fluid loss. Not sure why a master cyl would just give out at an ATM though. creepy.
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Old 03-11-2003, 08:43 PM   #4
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thanks, ill do it at work tomorrow
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Old 03-15-2003, 11:29 PM   #5
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wow, turns out i had a minor leak on my break modulator proportioning valve! The lines coming out were leaking and whatnot, so i went underneath and took off the brake lines....they are all rusted and shot, thanks to minnesota winters. I tried to replace them but NO ONE sells METRIC brake lines....not even the damn dealer. I was told by them to go to NAPA or Carquest or Red Rooster, but none of them have the same size line with the correct adapters to go into my break modulator porportioning valve (btw this splits a main line to the back into two lines for each wheel and keeps the pressure equal)....I need to know where i can get ahold of some metric brake lines with metric adapters. There are two sizes...the main line is close to 1/4 inch (because its metric its not) and the two smaller ones are about 5/16 of an inch.
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