I know this is an old post, but I have an 87 civic hatch that is having the exact same problem. The booster, MC, rotors, calipers, and even the rear drums have all been replaced between 6 months and a year ago, and the front brakes locking up has only been happening for about 2 weeks. If I understand correctly, a poorly adjusted MC and booster would be causing all 4 wheels to lock up and not just the fronts, as well as wouldn't wait over 6 months to start giving me problems. Could it be the brake lines or the proportioning valve?
Wednesday, May 25th, 2011 AT 8:02 AM