88 Cutlass Ciera stall problem

I have a 88 Cutlass Ciera with a 3.8 FI distributorless ignition. There is a 3 pack of coils. The car has 93,600 original miles on it. The car completley dies whiile driving. It seems to do it intermittently. It must sit 5 to 10 minutes before it will restart. Then it drives off like nothing happened.

I have done the following:
Changed spark plugs and wires
Changed the ignition module
Changed mass air flow sensor
Changed PCV valve
Fuel pressure checks good

Anybody have any other other suggestions or run across this?

Crankshaft positioning sensor fixed it!!