vindcar I noted that you posted that same link a number of times. It is broken.
Usually a spongy brake is air in the lines.
I vaguely recall reading something somewhere discribing how the RABS system works, on bronco's. I *think* there is a computer controlled proportioning valve that shifts fluids from one wheel to another that if it is stuck open or is leaking or something can cause some problems. I am thinking that amoung the problems it may cause a spongy pedal, or one that gradually allows the pedal to sink to the floor.
How is that for a vague, nondiscript, noncommittal answer? | 
