i know this is a old subject but i am out of ideas. my 2007 2wd f 150 has both front calipers dragging bad. i have tried two new calipers and hoses and nothing changed. i have tried bleeders and only dribbles out and changed nothing. i have cracked the lines at the master cylinder and nothing changed. the pistons compress fine and the slide pins slide fine. PLEASE HELP

 

Are the pads in correctly? If not, they can cause this.

 

yes i checked them and also one side was never even off just started after the other side started i have read post and watched every video and it just doesn't act like its supposed to

 

Make sure that not only the shims are clean, but also their cast iron seats. Rust pushes the shims out, preventing the pads from releasing. Also ensure that the metal spreader-springs are properly installed in the pads.

 

all new shims and springs new grease etc . the pads slide great till you put the calipers on. it just doesn't make sense

 

does the brake pedal feel abnormal when you push down on it?

 

Ok but are the shims themselves seating properly in the cast iron brackets?

What calipers are you using?