1994 Cadillac Concours brakes will not hold pressure

1994 CADILLAC DEVILLE CONCOURS
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GMT
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Brakes problem
1994 Cadillac Concours V8 Front Wheel Drive Automatic 145k miles

my car a 1994 concours will not hold brake pressure, there is no fluid leak, and I have bled the brakes but the pedal travels to the bottom of its range, it does stop the car, but you have to pump up the brakes and then it will lose the pressure with in seconds, I am asuming it is either a vacume leak that I dont hear or a booster proble
Mar 12, 2009 at 8:37 AM
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DOCFIXIT
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I vote master cylinder failure.
Mar 12, 2009 at 2:57 PM