I have lost all pedal, both the brake light and the abs lights are on. I have bled the brake several times in which I only get air out of the driver's side rear. This fixes the problem for about 3-4 days, at that time only after sitting through the night I will come out and fire it up and the lights come back on and I have no brakes once again. I have replaced the master cylinder and the porpotioning valve. Also I never loose any fluid I just take in air somewhere. Does anybody have any ideas?

 

Sounds like your drivers side wheel cyl. or caliper might be sucking some air in. Sounds like a pretty strange problem, but sinde u replaced the brake master and the porp. valve, i would make the cyl/caliper my next step.