1980 civic clutch pedal just goes to the floor. If fluid levels are right then what is it? I can start the car in first or second and go, then I can push in the clutch(all the way to the floor with no resistance) and shift it to third but thats it. I cant shift from neutral. Car was making screeching noise when you push in the clutch.

 

im pretty sure you need a new master cyclinder for your clutch

 

either that or you made syncronizers in transmition go bad by shifting it into gears with out clutch or you could just need a new clutch, or clutch master cylinder