I was wondering if anybody might have a clue as to what is going on with my brakes. I have a 94 LS and every now and then my break pedal will go all the way to the floor, but as soon as I release and press it again, it will have pressure. I am not leaking fluid anywhere and this problem came out of nowhere (I haven't done any recent brake work). Does anybody know what this means?-air in the line, bad master cylinder?- Thanks for any info.

 

Your Brake master cylinder is gone. I had the same problem. Dont buy a brand new one Buy a rebuilt one. Buying a new one isn't worth it.