Chulch

Had pedal fade,replaced master cylinder,better but not fixed..can pump brakes and it feels better but not "normal"..now I have my brake light on..any suggestions? My buddy told me to bleed the crap out of it.

Tackle

Bleed it if you haven't. Duh.

Brake lines at the front wheel can bulge. Replace them. If drums in rear, adjust them.

akdoggie

Your brake booster could be leaking air, which can cause your pedal to get soft or the check valve on the booster could be leaking. Check there first, after you are sure there is no air in the system. Good luck.

Cmanjr

Just curious, how does one adjust the rear drums

jstockert

The slack adjustment wheel. Can be accessed from the backside of wheel. Remove rubber grommet at the bottom and reach in with a flathead screwdriver. It turns top to bottom or bottom to top.

Chulch

Tackle..bled twice..have disc in rear..have front lines just haven't replaced yet..very busy!! Wife is out with knee injury with 2 kids haha..thanks for the info guys

serranot

https://www.f150forum.com/f6/brake-p...-150-a-157374/

This was my problem. Replaced ABS unit and works perfectly now.

Chulch

Did you have to pump brakes at highway speed to get normal feel? I'm hoping it's not HCU unit

My03fx4

Take it to your ford dealer or someone with a ford vcm scan tool and have them perform an abs service bleed first before replacing the hcu, after they perform the abs bleed follow the normal bleeding procedure and bleed all the brakes to get the air out.

serranot

Pedal faded at any speed.