Ya so there it is i have an 87 na, here is the deal it starts ok and idle's semi ok you know with a little up down sounding anyway every time i hit on the brakes the car dies, i pulled off the vac line that goes into the brake area and plugged it up to see if that would help but no go still dies if i hit the brake cant find any other vacume leaks either please any ideas oh also tried turning idle up in case of power being taken away but even at full idle still dies.

 

I'm thinking BAC... but im not sure...

 

Ok im kinda new at this and cant find it in the search where is the BAC and what does that stand for.

 

Do you have any brake problems?

 

No the brakes work fine however i didnt try driveing while the vac line to the brakes was off cause i wouldnt have the same power to stop.

 

I had the same problem myself when i first put in a GXL brake booster and master cylinder, my problem was the little wire off the bottom of the master cylinder i hooked it up to the other white two prong connection right under the booster, my old mastercylinder didn't have the connection so the one in the car was connect to nothing, i kept blowing the fuse that controlled my gauges and AC panle, i pulled the connection and the problem dissapeared

 

I had a problem which was electrical.

My cars Voltage would drop drastically when the headlights were on and the brakes applied. So low that the car almost died.

I never figured it out since it magically fixed it self then a few weeks later blew an engine.