yesterday i noticed that when i pressed the brake the idle started bouncing...when i let off...it went back to normal...so today im driving around and i go to press the brake and its hard as hell to press down...and its still causing the idle to bounce...i took off the vacuum line between the master cylinder and the intake manifold..and blew through it..it seems to be fine...i tested out the little one way valve..and it works...anyone know what i need to replace?

oh yeh i forgot to mention that also..right when the pedal got so hard to press in...it started making a hissing sound...inside the car..


[Modified by thekori, 1:21 AM 1/1/2003]

 

Sounds like your brake booster is shot. That's the hissing noise you here. When you step on the brakes you are losing all of your vacumn and the motor runs crappy. Goodluck

 

that'd be my guess too

 

thanks...so i just replace the whole booster? i think my master cylinder is leaking too...so i may just replace both....anyone else have any input?

 

u might as well replace both, after that your ****'ll be nice.

 

get a teg master cylinder

 

Then have your brake system flushed, that right there will give a vast improvement....