im workin on a 99 f250 4x4 7.3, the brakes are locking up all four after a short drive,the only way i`ve found to back them off is bleed a caliper doesnt matter which one it releives the preasure on all not sure where to start. the truck has abs on the rear only.

 

replace your master cylinder thats what i had to do. if you did a brake bleed using the pedal method you got some junk in ther.good luck