All 4 brakes locked up!! Help!!
99 f250 7.3 174k
When I was parking today my brake Pedal went hard and my brakes locked up. I really had to give it a lot of throttle to move. Parked it hoping it would be better when I returned. Same thing. Drove it home and all four corners were smokin hot and steaming. I also noticed it gets worse when I turn. If you drive, say one mile without braking, then the brakes gradually let off, but as soon as you hit the brakes again, same thing. They lock up. I've been reading that the power steering and brake system are connected via hydrobooster. About 4 months ago I topped off the PS system with PS fluid instead of ATF. Could this be causing my problem. I haven't had any problems prior to this, oh except when I make sharp turns I would notice the brake pedal become stiffer and the brakes we sticking.
What should I do?
Since its all four corners I'm leaning towards booster or master cylinder.
Should I do a PS system flush and put new ATF in?