Ford f350 diesel truck 30 amp fuse keeps blowing.

Some of those trucks had a heater coil in the fuel filter bowl. It would short out and blow the fuse . Try unplugging the wire just behind the bowl ,and replace the fuse again. that may fix the problem.

Is this truck a diesel????

can be ICP ingection control pressure sensor

For 1999 Ford Truck F350 Super Duty P/U 4WD 7.3L Turbo Diesel 8cyl the Flasher is located: Behind center of instrument panel.

Hope this help to fint it (remember comment and rated this).

is it the crank fuse if it is could be starter drawing to many amps try new starter

that fuse powers pcm fuel heater and some other things. when the fuse blows the pcm shuts down. causing it to not run. usually its the heater that is bad. it is located at the back driver side by the fuel pump. you can unplug it and see if it starts. if so you will need to replace the heater

sounds like eithor the glow plugs are shorting or the timmer is pooched

Check out faxonautoliterature. They list an original Ford wiring diagram manual for your truck for $59. They also have a couple of different Ford service manuals for your engine, diagnostics and repair. If your wiring and relay problems are engine specific then a copy of Haynes Diesel Engine Repair Manual, part # 10330, will be right up your ally. For $20 it provides an excellent trouble shooting and repair manual for the DIY diesel owner. It has separate sectons for the 6.9 and 7.3 engines as well as GM. I know this isn't free but I hope it will help.

you o-rings for you drain valv are leacing the yellow valve on side of fuel filter replace and you will be good ford sells o-ring kit

Is the battery fully charged.
Sounds like you have a short in or near the fuse block. Best taken to a good mechanic to have it checked.

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