OK. so i finally got to go for a longer test drive yesterday after getting an alignment done after the new front end parts. All went well , until…
Brake pedal was stuck down, could not force it up, could not force it down, all four wheels had their brakes applied and car wouldn’t go anywhere.
Car is a MANUAL DRUM brake car, all four wheels. I have replaced the master cylinder with one from NPD, came with the pushrod. Replaced the brake lamp switch, bushings, and clip.
When I went back about an hour later (after i had to chill and step away from it), I was prepared to start taking things apart and it worked fine. I have had 3 instances of the brake lights staying on but playing with it enough would make it work correctly.
It felt like it was a mechanical issue- as the pedal would not budge one bit. I even took a deadblow hammer and whacked it down or up to see if i could jolt something loose… nada. would not budge one bit. But it fixed itself later on its own.
I can see how a wheel cylinder could get stuck , or perhaps more than one, if I had moisture in the fluid or something and it got hot… some have suggested the proportioning valve… but with any of those, wouldnt I be able to move the pedal back up by forcing it? My thoughts are something in that pivot area got jammed up, so that’s what i was going to start disassembling but why or how would it go back to normal on its own? I understand classics are fun and all that, but when it comes to an actual safety thing like brakes and doing this, i’m afraid to even try to drive it. If it gets stuck down, whats to say its not going to get stuck up and not be able to stop?
I am thinking to just get yet another new master cylinder, new pushrod, new bushings, new brake switch, all over again and just replace it all, which is a waste but I don’t know what else to do. For now, the car is back in the garage and i’ve stepped away from it. Hopefully not forever, but I’ve done so much to it to get it where it is now, and now be able to not drive it… its ridiculous.