We have a 97 f150, with a 5.4 auto 2wd. The brakes were giving us problems, they would grab extremely hard and fling you forward. I took a look at them one day and the driver side pads were completely destroyed and there was a huge gouge in the rotor, the passenger side was ok though.

So both sides got new rotors and pads, repacked bearing and new grease seals.

Fast forward a week and an half, the driver side is starting to get grooves on the rotor, but the passenger side doesnt look like a pad has even touched it, or has been very lightly touched.

I have replaced the caliper on the driver side but it still appears to be fully extended at all times. I cant turn the tire or rotor with no pressure applied to the pedal, unlike the passenger where i can spin the tire with no pressure on the pedal.

 

Your brake hose has a restriction in it,its not releasing the pressure,replace it.

 

or, the brake caliper is frozen in place. Remember the two bolts you took out of the caliper to hold it on ? THe bolts go thru two sliding tubes that allows the caliper to float. You need to pull the tubes out of the rubber boot, wire brush and put a little oil on them and reinstall. Things should slide in and out easy. Put the caliper back on the truck with the two bolts. Youl should be able to push/ pull on the caliper and have it slide in and out 1/4 inch as it straddles the loose disc.

 

Ill try that before i replace the hose.