Resetting Proportioning Brake Valve 0n 1985 corvette

[wildbill85]

Hi, I had to replace the front Brakes on my 1985 C4 the front brake are locking up seems like the back brakes are not working. It looks like the proportioning valve is in the master cylinder on the 85 C4 is there away for Resetting Proportioning Valve 0n 1985 corvette.Please any help would be very appreciated. Thanks. Bill

 

[Itshakes]

Resetting Proportioning Valve

Bill- When I swapped out all four calipers on our '81 Corvette, I had the same problem. I asked a good friend, who restores Corvettes, and he said, "just take it out and jam on the brakes to the point of lock-up, and it will adjust itself." It sounded crazy, but I'll be damned, it worked! I don't know if it will work on your '85, but it's worth a try.

 

[wildbill85]

C4 brake help

Bill- When I swapped out all four calipers on our '81 Corvette, I had the same problem. I asked a good friend, who restores Corvettes, and he said, "just take it out and jam on the brakes to the point of lock-up, and it will adjust itself." It sounded crazy, but I'll be damned, it worked! I don't know if it will work on your '85, but it's worth a try.

Did you jam on the brakes going forward or were you going backwards???

 

[Itshakes]

C4 Brake help

Bill- I drove to a parking lot where it was safe to do. I accelerated to about 25 mph going forward, and jammed on the brakes to the point of lock-up, as you would do in a panic stop. The proportioning valve adjusted itself, and we never had any trouble after that. Good luck, and I hope this solves your problem.

 

[wildbill85]

c4 brake help

Bill- I drove to a parking lot where it was safe to do. I accelerated to about 25 mph going forward, and jammed on the brakes to the point of lock-up, as you would do in a panic stop. The proportioning valve adjusted itself, and we never had any trouble after that. Good luck, and I hope this solves your problem.

yea, i tied it it didnt work thanks

 

[Itshakes]

C4 Brakes

You might want to try to bleed off some fluid from the rear calipers, that might be just enough to release the proportioning valve and restore the brake balance you need. Have someone sit in the car and push on the pedal, then bleed the passenger side first, and go to the drivers side next.