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1992 CADILLAC DEVILLE
How do I know if my booster needs a new brake check valve. Thanks.
have the same problem?
Thursday, June 7th, 2012 AT 1:29 PM
If the check valve goes bad, the braking effort would increase drastically with braking efficiency dropping badly. Engine would most likely idle erratically.
When vehicle is shut off, wait a few seconds and test the brake pedal. If the pedal is soft and starts to get hard with each subsequent depression of the pedal, the valve is good.
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Thursday, June 7th, 2012 AT 1:51 PM
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