okay so i got a 87 camaro (v6) for $200!! wouldnt crank so i put a new fuel pump and she fired right up well anyways my car will start up and idle but i barely have brakes.i I've noticed that its mostly when im idling or going slow but when im cruising down the street i have brakes. what could be the cause of this? when i say i barely have brakes i mean i have to push the pedal to the floor to stop (& its kind of hard to push) does this sound like a vacuum leak? any help is greatly appreciated. thanks!

 

Check the line to the brake booster, fluid level, bleed the system.

 

First thing to do is check all your vacuum lines (especially the one going from the brake booster to the plenum) for cracks and/or missing connections. It sounds like you have a slight vacuum leak but as your RPMs move higher (when your going faster) your getting enough vacuum to power the brakes correctly.