I have a 1997 ford F-350 with a 7.3 power stroke about a week ago went to start it the batteries were low I charged them got it started drove it sunday and monday morning in the after noon if stopped running had it towed to the house today replaced the batteries and the glow plug regulator new max 30 fuse and went to start it blew the fuse right away as soon as I turned the ignition switch on thank you for any help you could give me!
Ditto. To expand on that a bit, there is a heater in the bottom of the fuel filter/separator housing. That heater often will short to ground, blowing its fuse. IIRC, that fuse also powers the PCM. The short-term fix is to disconnect the heater (a plug on the bottom of the separator), replace the fuse, and it *should8 fire back up (if that's the problem). Long term solution is, of course, to replace the heater (which IIRC is available separately and not very expensive).