I hope I could get some help here.About 2 weeks ago I started getting a low brake pedal, a lot of travel,fades real bad. I went and inspected all brakes. every thing was in great shape, so I went and changed out the master cylinder, bench bleeded it . Still the same problem. It comes and goes. One minute i have half way decent pedal, then 2 minutes later it goes to the floor. Iam thinking possible the abs modulator? Any advice out the/ Any one with this problem?