whats the actual code/codes your getting?

could be a bad icm, or crank sensor maybe. the running hot make sure the t stat housing is bleed of air and the rad is full.

junking it seems to be a bad move. if you got that much into it may as well try more. park it till a new job pops up.

hell you could sell it for more then a jy would give you.

what year make model miles, all that happy jazz?