Hi Scotty, love the show ,
I have a 91 Toyota 4Runner and I stepped on the breaks the other day the pedel started to vibrate and I heard a hydrolic swish sound as well and had trouble stopping. But this only happens occasionally and usaly works fine, could this be that my master cylinder is going bad. I check for leaks and and all 4 wheels were dry.
Also the other day I was parking and when I put it in park the same swish noise happened. Could it be the booster?
Thanks a lot