94 SC 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 02-08-2008, 09:03 PM   #1
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Default 94 SC brakes??

i had bleed the entire brake system with the car not running, the pedal presssure and height was perfect!! but , when i started the car my pedal goes to the floor??
if i rev the engine constant at 2000-2500 rpm the pedal is stiff again until the rpm drop to idle , then i have no pedal???
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Old 02-08-2008, 09:33 PM   #2
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Sounds like you joined the "My master cylinder is dead" club. No amount of bleeding will cure that issue...repair by replacement
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Old 02-08-2008, 09:35 PM   #3
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brand new mc ??
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Old 02-08-2008, 10:04 PM   #4
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I dunno....is it??

If it is, did you bench bleed it before installing the lines to it? It is also possible to get one bad from the box...esp. if it is a reman.
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Old 02-08-2008, 10:26 PM   #5
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off course it was bench bled ,
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Old 02-08-2008, 10:45 PM   #6
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could it be the booster?? this is why i like old cars,,pre 1980
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