CHECK VALVE

1992 Cadillac Deville

Tiny

sean03

June, 7, 2012 AT 1:29 PM

How do I know if my booster needs a new brake check valve. Thanks.

FOUND 8 RELATED QUESTIONS

1 Answer

Tiny

KHLow2008

June, 7, 2012 AT 1:51 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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