I just replaced the ignition switch and the key switch assy and sometimes when I switch the key to off my 77 C-10 continues to run. Not run on like a hot engine just runs like I didn't turn the key off.
Update, this afternoon I was running around and it shut off just fine then it did it again, I left the key in the off position and after idling for 30 seconds or so the truck shut off by itself. Should I name it Christine?
Any suggestions?