Why are my front brakes holding? on 1993 Ford E-350

My brakes are dragging on my 1993 ford Econoline van e350. I have changed the master cylinder, front calipers and the brake hoses.front brakes are holding. Does anybody know why?

by in Potwin, KS on August 04, 2013
1 answer
ANSWER by on August 04, 2013
Open bleeder to see if pressure still present without brake applied, if so then possible booster return spring is weak or broke inside the booster. Next unhook vacuum hose at booster and see if brakes release. Does the brake pedal move freely when tested by hand? Brake lights turning off when pedal released? Was this work done to correct THIS problem to start with?