7.3 DI nostart. Fried PCM or?

[international97stroker]

I've got a 1997 f250HD 7.3 And while driving highway speed BAM the truck shut off and could not restart. now I know about the 30amp fuse replacement (done that) fuel bowl is removed/unpluged and I still am unable to restart. truck is warm (block heater+inside heated garage). Still NO Start. my wts light comes on and glow plugs function regularly. Im wondering if by putting a higher fuse (50amp accidentally) into the 30amp spot would have Fried my PCM? so, now i know the problems aren't the fuel bowl,gp's,cps,or batteries. What is a good plan of action? anyone been in this spot before? It HAS to be electrical!

[madpogue]

Does the tach move while you crank it?

[international97stroker]

yes (to an extent) sorry forgot about that. I can see it get power "on" and wiggles just slightly when cranking. also would the CPS be bad if my wait to start light still comes on? I replaced the cps with a new one (hopefully not a "one-in-a-million" defect).

[madpogue]

WTS light does not indicate anything about the CPS. Moving tach _usually_ means CPS is good, but aftermarket brands are all iffy. Are you getting any white smoke when you crank it?

[international97stroker]

no smoke at all there is fuel in the bowl. i'm gonna grab a third cps today and see if there's any difference. otherwise does it make sense to start attacking sensors? I.E. IPR, ICP?

[international97stroker]

UPDATE!: up and running again. answer:quadruple check fuse locations and relays. thanks!