when my wife runs the ac in her car she said that the brake pedal is going to the floor. she said it only happens when she is at a complete stop and holding pedal so the car doesn't roll(auto). i thought maybe the extra load on the motor w/ the ac on was causing this but she said it's getting worse. things i am going to check are:
-vac leak
-brake fluid
-resevoir leaks
-brake booster

can anyone steer me in the right direction as to where to begin?

thanx

 

you need to replace your brake master cylinder get 1 from the dealer or 1 made by adler that way you dont have to mess with push rod adjustment like some of the other cheaper brands,,if you do work yourself make sure to bench bleed master before installing it

 

cool, but why does it only do it when a/c is on? i would think if it was the master cylinder it would be that way all the time. yes i do do work myself.

thanx for the help.