I am trying to help a buddy of mine fix a brake issue he is having on his '91 DeVille.
The fluid level was low, so we added some and then when that didn't help, we bled the brakes. I am not familier with the car so I was unable to tell when I drove it, but we were able to narrow down the problem. The brakes work great in a stop and go situation. The problem is, at high speeds, when you would gradually apply pressure to slow down, the pressure bleeds off until you are to the floor with little braking power.
Here is what I can tell you for sure:
1) when the car is off, you can build up good pressure when pumping the brakes.
2) When traveling under 30 or so and if you jam the brakesm it stops you as expected.
3) when running, if you keep your foot on the brake, ir apply pressure slowly, the pressure bleeds off.
4) not losing any fluid that we can tell. the underside of the car is pretty clean and its not leaving puddles.
Can anyone help? He's not in a position to take it to a mechanic or we would and be through with it.
The fluid level was low, so we added some and then when that didn't help, we bled the brakes. I am not familier with the car so I was unable to tell when I drove it, but we were able to narrow down the problem. The brakes work great in a stop and go situation. The problem is, at high speeds, when you would gradually apply pressure to slow down, the pressure bleeds off until you are to the floor with little braking power.
Here is what I can tell you for sure:
1) when the car is off, you can build up good pressure when pumping the brakes.
2) When traveling under 30 or so and if you jam the brakesm it stops you as expected.
3) when running, if you keep your foot on the brake, ir apply pressure slowly, the pressure bleeds off.
4) not losing any fluid that we can tell. the underside of the car is pretty clean and its not leaving puddles.
Can anyone help? He's not in a position to take it to a mechanic or we would and be through with it.