1989 ford probe pickle

if you could fix this, your a god. i have had to change the distrib,and coil 3 times and the fuel mod. every thing ran fine till now, the oil guage will drop to 0 and goes back to norm. then back to 0 and the temp will flux a bit and the rpm will goto 0 then flux as well,the car drives fine for a bit then dies and wont start like as if no spark. i let it sit or keep starting it and it will start but die or start, seem to run fine then it does it all over again.the last 3 times this happend i chaged the distrib.and seem to fix.is it my distrib. again or is it something eles like a oil pump or sending unit? (also it is all digital dash) HELP?!

thanks,
jay