Help 1991 with no fire

[obxnascar17]

I went to work the other day and my 91 Explorer just cut off ,no hesitation or warning it just died. I found Ihave no fire at the coil ,can any one give me any advise on what to check ?

 

[mrboyle]

Crankshaft position sensor!

 

[cculter]

Check all the main wires running to the coil. If any modifications have been made to your wire harness they might have been cut or grounded out.