I have a 1990 bronco. I was driving down a busy street,hit the brakes and the pedal went to the floor.(luckily that lincoln navigator was there to slow me down) When i got it back to the shop, i noticed 3 steel lines rusted through.I replaced the lines and bled,but i could not get a solid pedal.I replaced the master cylinder,wheel cylinders and calipers,bypassed the abs valve and adjusted the rear wheels . still no pedal. please help before iblow up this truck.lol