Hissing sound when I depress brake pedal on 1997 S10

abs
brakes

#1

When holding down the brake I hear a hissing sound. The engine sometimes stalls, especially if I also depress the clutch. The abs lite has always been on.


#2

It has a vacuum leak somewhere in the lines. Check ASAP.


#3

Your power brake booster has a ruptured diaphram,