i have a 1992 dodge dakota after driving a few miles the brakes apply there self without pressing the pedal and then after driving a few more miles they release then they may or may not do it again before i return home .ive replaced master cylinder .calipers,the brakes linesrotors and pads any suggestions

 

Take it on a back road where you won't have to do an emergency stop. Let them grab then get out and disconnect the vacuum line from the brake booster and see if releases. If so you need a brake booster. Easy replace and if I recall right you can squeeze it out without removing the lines from the MC. Good luck.

 

theres nothing on the brakes? Like axle fluid or brake fluid?