1993 Ford Tempo No Start

1993 Ford tempo GL L4 2.3 Liter gas engine problem
I had an intermittent problem, you could drive anywhere from 15 minutes to days then the engine would stop, it also had a squealing sound. Every time it stopped there would be no spark. I replaced electronic module on the side of the distributor, ignition coil and camshaft position sensor. When I removed the distributor I found the bearing was bad so I replace it with a new distributor with all the electronics in it. The car acted the same way, except the squealing sound is now gone. I drove it about 10 miles and it stopped again and would not start, I towed it home and let it sit overnight and it still would not start. I replaced the computer with a used one. The car started and we drove it for a couple of days. Parked in the drive way and the next morning it would not start. Same problem no spark. Is there something that would short out the computer?