proportioning valve
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Junior Member
Joined: Aug 2010
Posts: 62
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From: yonkers
Car: 87 formula
Engine: 350
Transmission: 700
Axle/Gears: 12 bolt strange 3.73
proportioning valve
can any one tell me what are the symptoms of a bad proportioning valve.
i am having a problem were my front brakes are not holding. the car wont hold after hitting 1500 rpm. also when in Park i pump up the brakes then give it gas the peddle will lose power. i changed the master and i changed the booster. everything in the car is basically new. the car has been setting. i also have the SS braided lines for my brakes but they all bleed good. please any help.
i am having a problem were my front brakes are not holding. the car wont hold after hitting 1500 rpm. also when in Park i pump up the brakes then give it gas the peddle will lose power. i changed the master and i changed the booster. everything in the car is basically new. the car has been setting. i also have the SS braided lines for my brakes but they all bleed good. please any help.
Member
Joined: Sep 2006
Posts: 164
Likes: 0
From: Birmingham, MI
Car: 1983 Crossfire Recaro T/A
Engine: 5.0L Crossfire
Transmission: Upgraded 700R4
Axle/Gears: 3:23
Re: proportioning valve
A prop valve shouldn't cause what you are describing. It is basically a metering valve to direct fluid proportionately to the front and rear brakes at a certain ratio.
Based on your upgrades and tests, one thought - have you checked the booster check valve, grommet, vacuum hose, vacuum hose connections for a vacuum leak?
Maybe something didn't go back together correctly on your booster?
Based on your upgrades and tests, one thought - have you checked the booster check valve, grommet, vacuum hose, vacuum hose connections for a vacuum leak?
Maybe something didn't go back together correctly on your booster?
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