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So has anyone ever put together symptoms of a bad prop valve?

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Old 10-21-2005, 12:48 PM
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Car: 86-FireBird
Engine: -MPFI
Transmission: T5
Axle/Gears: 3:42
So has anyone ever put together symptoms of a bad prop valve?

So has anyone ever put together symptoms of a bad prop valve?

I am getting to many conflicting suggestions to my brake problem.
Might be a useful to other and sticky it.
Old 11-05-2005, 10:59 PM
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Car: 1989 Camaro RS
Engine: ZZ4 350
Transmission: T-5
Axle/Gears: BW 9-bolt w/3.73
A proportioning valve is used to limit the maximum pressure going to the rear brakes. If your prop-valve isn't working you will have excessive wear on the rear brakes and rear brake lock-up problems. If the valve is stuck closed you will have very little rear brake wear. If your car has drum brakes out back make sure the wheel cylinders are 100% (no leaks, moving freely) before tearing your combo-valve (it has 3 functions on our cars) out and replacing.

Last edited by MurcoRS; 11-06-2005 at 09:28 PM.
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