93 zj is throwing code and will not let me crank,what the hell do i do? wheeled 3 hrs and alt went dead then started this crap! any help would be great, thanks!!

Maybe try posting this in non hardcore and see if she'll fire then?

Crank sensor maybe. Wat motor do you have?

Also like on my 97, the alternator regulates voltage to the pcm, if the Alternator took a shit and now it will not run and things were fine befor I would start there.

If that does not fix it, may be the pcm itself.