Recently I replaced all the lines in my car, no leaks everything’* tightened down, using speed bleeders with thread seal and a bottle with a hose Ive ran about 1L of fluid through, starting with the longest line and ending with the shortest, the fluid coming out seemingly doesn’t have any bubbles, engine off the peddle is stiff with some sink but engine on I have no peddle, goes all the way to the floor with little resistance, is there anything I’m missing or doing wrong? Been trying to figure this out for days

Bleed the master.

Do I need to remove the master cylinder?

That'* best. Bench bleed.

you understand your car has a bleed procedure that has to be completed after all the manual bleeding is done

you bleed your master, then you bleed the pipes to the abs unit , then you bleed from theem to the wheels, then you bleed the ABS with scan tool procedure, usually that is at least for bosch 5.0 and bosch 5.3 abs you may have Delphi 6 I cant remember what lesabre had those years, but if its the same there you go. the short story that is