Today I had to get on the brakes pretty good. As I came to a stop it sounded like the booster was humming and quit when I let off the brake pedal. My guess is the booster having some possible lack of vacuum and needing more vacuum but becuase I was at such a low rpm it wasnt getting it..but has anyone else ran into this? Should this be a sign of pre-booster failure?
http://coloradok5.com/photos/data/500/8443NP203_side_mount.jpg
http://coloradok5.com/photos/data/500/8443NP203_side_mount.jpg
