Alright, i had this problem for 2 weeks already, i would turn on my car eairly in the morning and the brake peddle would give me no pressure but as i pump it i gain a lil pressure enuff to drive safe ... Not. cuz as im driving the peddle seems good to a point that it gets harder... more and more pressure .. at the point that i press it lightly and the car stops hard and fast... the it build up too much pressure the *** im driving like at 60 im suppose to cruise the car slows down faster cuz the pads are touchin the the rotors. and it seems as im pressin the brakes but im not.. i have no clue what the hell is goin on. i changed the Rotors. the pads, and the flushed and bleed the brakes. everything cost me about 130 not includin the brakes and pads. wtf is goin on?

the only thing i have in mind is the master cyclnder or that thing its connected to thats big black and round.

 

(pedal)
This a good example of how not to fix things - dont just change parts unless you know what the problem is.

is your master cylinder leaking or losing fluid?
you may have done a poor job of bleeding your lines too

 

my brakes were squeekin and my lines were not leaking and he bleedin was done tiwce.