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I have a 2005 Ford f150 lariat truck 5.4 liter keeps blowing

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I have a 2005 Ford...
I have a 2005 Ford 150 larit truck 5.4 leater keeps blowing main fuse to start truck had in shop for a month now they can't fined anything with it please help me Ross
Submitted: 2 years ago.Category: Ford
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Answered in 1 hour by:
2/15/2016
Ford Mechanic: James, Ford Technician replied 2 years ago
James
James, Ford Technician
Category: Ford
Satisfied Customers: 3,634
Experience: Ford Senior Master Tech, Ford gas and diesel expert, ASE Certified
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Hello, do you have the fuse number by chance?

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Customer reply replied 2 years ago
20 amp fuse buds Napa #782_3045 # ***** panel on truck is 102
Ford Mechanic: James, Ford Technician replied 2 years ago

Thank you. I would replace the PCM diode. The diode is designed to prevent voltage spikes from when the key is cycled on or off.

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