I have a 2006 F150 with 135k miles on it, after starting the truck I noticed it was accelerating slowly. Upon reaching home all 4 rotors were hot and the brakes were being completely compressed to the disks. I'm thinking it could be something wrong with the brake master cylinder but I do not know how to confirm this. The brake pedal seems to be working like normal as well. Has anyone had a similar issue?

-Biss

 

i would suspect the master cylinder too since all 4 brakes are stuck.