Ok so my brakes on my s13 get stiffer and stiffer and eventually stick to my rotors as i drive and they heat up. My brake pedal gets harder and harder the longer i drive, until eventually i am having to go full throttle just to move, and when i shift myt car dips down in the front bcause the brakes are engaged. If i stop i cant move anymore, the brakes just stay locked unti i let them cool down or i take off the master cylinder to releive the pressure. First i thought it was my master cylinder. Then my brake booster, and lastly the calipers. I went through each one of those and replaced them. Its still happening. I dont know whats wrong. Can someone help me out?

 

is it all the brakes or just the front??

 

just the fronts.

 

did you bleed them? it could be air bubbles running through your lines

also, since you removed your BMC, you should bleed them again anyway.

 

ya i bled them when i put new calipers on.

 

hope you didnt put power steering in the brake fluid cause when I bought my car the lady did that and the same shit happend to me.

 

yeah, thats a bad master...
it builds up the pressure but doesn't let the pressure go.
maybe you got lucky and replaced a bad master with another bad master...
also, if your pedal isn't adjusted correctly, that can do it too...
maybe your master went bad, and you replaced it but the pedal needed adjusted for the new master....

 

my pedal adjustment is good. Maybe i did get a bad master? i have another one so ill try that one. i hope thats what it is.

 

did you replace the bad one with a used one?
that could be what your problem is...
also, if you didn't bench bleed the master properly, that could cause you problems too..

 

i got a new one from napa and had it installed at pep boys cuz thats where i used to work and they bench bled it. i have a used one now that im gonna put on it. hopefully that will solve the problem