brake booster not working

[Coboose003]

Okay, so i have a 1990 gt and when my car idles I hear a hissing sound. When I press on the brake pedal lightly the hissing gets louder and if I press harder on the pedal the hissing stops it also stops. If I press the gas pedal in so far but as we all know the further the gas pedal goes in the faster I go. I've checked under the pedals I did not find any vacuum lines. I am in the military and could deploy soon and my wife needs to be able to drive my car but cant push the pedal hard enough to keep the car stopped or stop the car fast enough so if any one could help me out I welcome it.

 

[Coboose003]

By the way I assume that my brake booster needs to be replaced just making sure there isn't a cheaper fix.

 

[Mustang5L5]

Yup. Sounds like a bad booster to me.

A stock booster is a relatively easy fix. Just make sure you have extensions and universal swivels for unbolting the booster nuts under the dash

 

[Coboose003]

Okay thanks for confirming that for me lol ive been asking around my command about it and no one knew... i just assumed

 

[Sicarius428]

Easy if you are 4 ft tall or 95 lbs... hehe. Good idea to pull the front driver seat out when you do this. Saves a lot of time.
Kevin