How to know if a wheel cylinder is bad?

[Fox Body]

Originally posted by twilightcall
Thanks. I actually just got the car this week. My pedal does the same thing that yours did. It goes about halfway down before you get a good amount of resistance and it starts braking. How do you check the proportioning valve and the booster? Is the booster hard to change?

First try to adjust your rear brakes then do what PKRWUD suggested (it's easy and if it works, saves you the trouble of messing with the booster). The thing about the booster is I think the only 2 places you can get another one from is Ford Dealer or a junk (salvage) yard. I had another V6 mustang that I was using for parts at the time and just took it off that one. It's really not too difficult to change. First time I ever did it took me under 2 hrs (b/c I went slow and took my time).