why are my breaks hard randomly at slower speed with a weird noise? on 1995 Ford Ranger

sometimes 1-5 times in a row then it will break fine for a whole day I have 4x4 abs does this matter?

by in Morro Bay, CA on March 08, 2013
2 answers
ANSWER by on March 08, 2013
ABS light on?
ANSWER by on March 09, 2013
Sounds like problem with brake booster. Maybe first replace check valve on it and look for any vacuum leaks to it.