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Permmisive Start failure

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Old Oct 29, 2005 | 04:49 PM
  #1  
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Unhappy Permmisive Start failure

Greetings, a Newby here, looking for some help.

I have a 94 F350 Turbo Diesel that just dies intermittenly when going down the road. One of the 30Amp fuses in the Power Distribution Control box under the hood is blown. I get no "WAIT TO START" light on the dash ( controlls Glow plugs) and the truck just turns over repeatedly. I replace the fuse and I can then start the truck. I have ordered schmatics on the electrical system but haven't received them yet. Has anyone seen this before?

History: The truck was hit four years ago and the cab was replaced. The wiring harness is the original. This started once just 9 months ago but has not reared it's ugly head until last week. Now twice this past week it happen. The truck is only used on weekends.

Thanks
RPM
 
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Old Oct 29, 2005 | 04:52 PM
  #2  
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Old Oct 29, 2005 | 05:02 PM
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My first guess is the fuel heater has shorted. Its located in the bottom of the fuel filter bowl. Their should be a plug going to the heater that you can unplug. I think its #22 fuse????
 
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Old Oct 29, 2005 | 05:08 PM
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Can I run the truck without the fuel heater for diagnostics purposes?
TX
 
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Old Oct 29, 2005 | 05:10 PM
  #5  
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You could run forever without it. May want it fixed if you live in a cold part of the country.
 
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Old Oct 29, 2005 | 06:25 PM
  #6  
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TX! I'll look for it and giver a try.
 
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