Thank you for the info VSTECH. My master cylinder appears to be brand new, its one of things I noticed when I purchased the car and the fluid level seems to be correct. The last owner replaced all the brake lines and rotors except for one, and I was going to finish that yesterday, but I was using a friends car jack and it was only a 2 ton (very small not very stable) and I thought I was going to get hurt using it and the tiny jack stands....

Could the replacement brake line solve the issue if the old one is "bad"?

I seem to get good brake pressure if i pump the pedal a few times and once that happens it pretty much goes away, unless I stop the engine and start it again....then the brake pedal sinks to the floor and here comes the ABS sound....

Thanks again VSTECH!