1992 cadillac deville

1992 CADILLAC DEVILLE
135,000 MILES
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SEAN03
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My 1992 cadillac deville brakes do not work. I shifted from park to drive and the car took off. The brakes were completely locked up. The pedal for the brakes felt like a brick it would not work. I had to shift it into park so it would stop. I have a automatic transmission. I changed my master cylinder and break booster almost one to two months ago. I also can not get my brake drum on the right rear side. Thanks.
Apr 17, 2012 at 7:47 PM
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FIXITMR
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rock hard pedal indicates booster not functioning.
Apr 17, 2012 at 9:08 PM
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SEAN03
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what about it taking off. Im not touching the gas and it just goes.
Apr 17, 2012 at 9:10 PM
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FIXITMR
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idle too high?
Apr 17, 2012 at 9:18 PM
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SEAN03
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How do I fix that. When I turn it on it revs up and it never use to do that. Thanks.
Apr 17, 2012 at 9:36 PM
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FIXITMR
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2 problems may be related. a big vacuum leak would make booster fail and car rev.
Apr 17, 2012 at 9:39 PM
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FIXITMR
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check booster hose itself.
Apr 17, 2012 at 9:40 PM
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CADIEMAN
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push off and warmer buttons on the a/c panel untill u see all the segments light then release it will start going through all the cpus write down the codes and come back.
Apr 17, 2012 at 10:14 PM
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SEAN03
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No error codes I checked for that today. The hose is on the brake booster. I thought for sure I would find a code today but I didn't
Apr 17, 2012 at 10:20 PM
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CADIEMAN
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unplug it and test the vac. on the hose with a gauge!!
Apr 18, 2012 at 4:12 PM