1991 Explorer 4 door 4x4 168,000 miles My rear brakes stopped working. I could tell that only the fronts were stopping me. I thought maybe I had moisture in my brake fliud, and because it has been below 0 degrees here, I thought maybe the water had frozen my brake lines shut. I was only having this problem when it was real cold, but once the day got warmer the brakes worked just firne. So I figured that I would change the fliud out by giving the brakes a good bleed. I was not able to get ANY fliud to come out of the rears. I removed the brake lines from the wheel cylinders and the master cylinder and I was able to blow air through the lines from the wheel cylinders toward the Master cylinder, but not the other way ( from the master cylinder toward the wheel cylinders). My question is, is the ABS system, or some safety system shutting off the supply to the rears? Does it think that I blew a rear brake line and shut it off so I wouldn't loose all my fliud? I have put a new Master cylinder on it and the fronts bled just fine, but nothing out of the rears. Is there a one way valve that will allow air to pass back forward abut not front rearward? I really am baffled here. I need my wheels to get to work tomorrow. Is there something I can reset?
have the same problem?
Sunday, February 4th, 2007 AT 12:51 PM