Brakes gave out on me
#1
Brakes gave out on me
Ok so my brakes gave out a few times and i had to pull the e brake but here is the full story. I have a 94, 3.4 L.Any suggestions on how to stop this problem would be greatly appreciated.
Ok, so when i first start driving my car, and i get up over 20 mph, and use my brakes, my car starts making a sound at around 10-15 mph and the "Low Traction" light comes on as well. The sound sounds like it is surging for air or like a squeaking sound. Usually my brakes lose a little pressure and then recover but a couple of times they lost all pressure and the pedal went straight to the floor and i had to pull the e brake just to stop. After a few times of the low traction light coming on, the "ABS INOP" light comes on and then the problem disappears. It Doesnt make a sound when i stop and it stops perfectly fine. The next time i start my car though, the ABS light is off and it starts over again with the low traction and the sound. I took it to a brake shop and they told me the hub assembly was loose and i needed to replace it. So they replaced it and the problem still occurs...
Ok, so when i first start driving my car, and i get up over 20 mph, and use my brakes, my car starts making a sound at around 10-15 mph and the "Low Traction" light comes on as well. The sound sounds like it is surging for air or like a squeaking sound. Usually my brakes lose a little pressure and then recover but a couple of times they lost all pressure and the pedal went straight to the floor and i had to pull the e brake just to stop. After a few times of the low traction light coming on, the "ABS INOP" light comes on and then the problem disappears. It Doesnt make a sound when i stop and it stops perfectly fine. The next time i start my car though, the ABS light is off and it starts over again with the low traction and the sound. I took it to a brake shop and they told me the hub assembly was loose and i needed to replace it. So they replaced it and the problem still occurs...
#4
Join Date: Nov 2007
Location: Eastern PA,
Posts: 10,465
When I first read you post I was assuming it was your bearing assembly aka your hub assembly. Why do you think its not?
If your hub is flopping around it can push the caliper all the way in. You only get so much piston stroke per foot pump so as the piston is trying to get back to where it was the pedal feeling like it not doing anything until the piston get back to where it was. The first thing you see with a failing hub is a is the ABS light do the fact the speed sensor is not aligned inside the bearing. I have even seen them blink on off real has as the wheel wobbles.
It could be the main ABS dump valve sticking but I have not heard of that causing the pedal to go all the way to the floor.
If your hub is flopping around it can push the caliper all the way in. You only get so much piston stroke per foot pump so as the piston is trying to get back to where it was the pedal feeling like it not doing anything until the piston get back to where it was. The first thing you see with a failing hub is a is the ABS light do the fact the speed sensor is not aligned inside the bearing. I have even seen them blink on off real has as the wheel wobbles.
It could be the main ABS dump valve sticking but I have not heard of that causing the pedal to go all the way to the floor.
#9
Join Date: Nov 2007
Location: Eastern PA,
Posts: 10,465
You are not losing fluid? and the pedal goes to the floor sometimes? The next thing I would try would be a master cylinder. It could be that when you pushed fluid back into the master cylinder it damaged the cup seal. I know basic stuff about the ABS but maybe someone with more experance with the 4th gen brakes can jump in.