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2008 f350 diesel. Keeps blowing fuse 27 in the cab. They…

Customer Question
2008 f350 diesel. Keeps...

2008 f350 diesel. Keeps blowing fuse 27 in the cab

Mechanic's Assistant: Do all the fuses have the correct amperage for the circuits they're in?

They did. I pulled out fuse 28, 43, 45 and under the hood relay 57 and when i turn key forward it lasts about one second

Mechanic's Assistant: Are you fixing your F350 yourself? What have you tried so far?

Thats about the most i have done. It first died when i was backing up went forward about 30 feet put into reverse made it about 7 feet. Before that truck sat idling for an hour and a half

Mechanic's Assistant: Anything else you want the mechanic to know before I connect you?

Im cold as *#~^ and far from anything

Submitted: 8 months ago.Category: Ford
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Customer reply replied 8 months ago
Im cold in the middle of nowhere and not only is my phone at 9% power i dont have may fuses please hurry
Customer reply replied 8 months ago
Posted by JustAnswer at customer's request) Hello. I would like to request the following Expert Service(s) from you: Live Phone Call.
Customer reply replied 8 months ago
Let me know if you need more information, or send me the service offer(s) so we can proceed.
Answered in 16 minutes by:
11/21/2017
Ford Mechanic: Scott W., Ford Technician replied 8 months ago
Scott W.
Scott W., Ford Technician
Category: Ford
Satisfied Customers: 3,610
Experience: 28 yrs. experience as Ford ASE Master Technician. Accolades include being a 2005 Ford PTS Regional Finalist and 2006 ASE Ford National Technician.
Verified

H​ello my name is ***** ***** me take a look at whats on that fuse 27 circuit.

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Ford Mechanic: Scott W., Ford Technician replied 8 months ago

Fuse 27 feeds several other fused circuits, if there was a problem with them the other circuits, the other fuses should have blown, since it is 27 I suspect a wiring short either from the smart junction box to the ignition switch, or the feed wire that goes out under the hood for the relay. I am suspecting the white with orange wire from the ignition switch may be grounded, the only way to find a short like this is start removing circuits one at a time until the fuse doesn't blow. Here is a diagram.

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