93 Ramcharger suddenly died

Still could be the crank sensor, if it doesn't have a bad circuit it will not necessarily give a trouble code, just not see rpm. If you have any way to check for rpm with a scan tool would be the easiest way, but seeing if the injectors are firing with a noid light (<$20) is another. It still could be a wire or PCM, wires fail much more often than pcms do though.