94 won't start when hot outside

[Blizzard]

So it seems like I'm at the point where I start replacing stuff, and keep my fingers crossed...ugh!

1) crank position sensor ($50)
2) EDIS module ($200)
3) if I still don't get spark, then the ECU???

 

[Blizzard]

RESOLUTION...it was the EEC relay.

I tested the relay, but apparently not very well! All I can figure is that I tested it when it was cool enough for it to work.

Replacing the crank sensor & EDIS module didn't fix it, so I caved & took it to Ford, who diagnosed the relay.

A little frustrating and expensive, but cheaper than a payment on a new truck! I'm just glad it's running again (I'm now about 100 miles away from 200K!). Thanks for the help!