Here's one that's been puzzling me for a while. When I went through my car I replaced pretty much everything to do with the brakes with new stuff. New soft lines, new wheel cylinders, drums, new master cylinder and I also got a new pressure sensor for the master cylinder. Problem is, with it on there I have a pedal that goes to the floor. I've tried returning it and getting other new ones, nothing seems to help. I've tried bleeding the system, same thing. Now if I put the old sensor back on there, the brake pedal is super firm... like stand on it to lock 'em up sort of firm, but the brake lights won't turn off a lot of the time, or if I park it and the lights are off... the pedal will fall a little after sitting for a short while and the lights will turn on. Any advice?
It's a '63 144ci sedan.