well i keep getting a 83 code and now the brakes are starting to lock again like they did a few months ago. Baiscally a few months a go the brakes would lock but after sitting for a while it would unlock and be good while driving. i had already planned on replacing calipers, hose, on the front so i did that bleed the system and i was still having the same problem. gotta new master and still the same thing, everything on the back has been replaced except the hoses. New shoe, wheel cylinders and hardware and i'm still gettin the same problem. System has been bleed serveral times but bleeding the system only seems to make the problem go away for a few days. I even think the brakes may have been lockin slightly when I purchased the car 3 years ago seeing how on the day i took it home the right front brake caliper was smoking when i stopped.