my friend had a 80 vette and the brake light comes on. sometimes when the brakes are pumped the light will go off. It has new calipers, new master cylinder. The brakes have been blead but after a while the light will come on and I have to pump the brakes What do you think you think the problem could be?
Vette(s): 1982 Black, ZZ4, Hooker Side Pipes, 3.55 Rear,
Rebuilt & upgraded 700R4, All new suspension, brakes, & new Charcoal interior.
The switch at the brake pedal could be loose or have a loose connection. Do both brake lights come on or just one? If only one then that socket may have a loose connection, if both come on, then I would check the switch.
Vette(s): black 1982 coupe slate gray interior, 350 crossfire, 1985 fuel pump, Steeroids R&P conversion
I have bled brakes the traditional two person way and have a pressure bleeder as well but the quickest and easiest bleeding Ive done is by using "speedbleeders". They are cheap, work well and easy to use by one person.
Vette(s): 1977 T-Top,350,Auto Black Ruby Pearl,Steeroids R&P conversion
If the proportioning valve was bad the light would stay on, it sets itself if their is unequal pressure between front and rear brakes, encase of a bad leak so as to only loose one set front or rear. If breaks bleed down and can be pump back up I believe it sounds more like the mastercylender you can try pumping up the breaks and on the last pump hold and if breaks bleed down it would be mastercylender
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