Recently my front brake calipers locked up on me while i was driving. I had the Bronco towed home and began fixing the problem. Long story short, I had to replace both front calipers, brake booster and master cylinder (leaking), proportioning valve (clogged so no fluid was going to the rear), rear wheel cylinders (leaking), all the flex hoses, and the shoes and pads. Now when I bleed the brakes on the truck with it not running, i get a good stream of fluid from all the bleeder valves and a good pedal. But when i crank the truck the brake pedal goes straight to the floor. I tried bleeding the brakes with the truck running but I still get good fluid from the bleeder valves but still no pedal. I bled the master cylinder both on the truck and off and neither has helped at all. Does anyone have any ideas of what is wrong?
Oct 15, 2009 at 10:36 AM