Question about Ford Expedition

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Last week our Expedition would not start. I tracked it down to the 30 amp starter solenoid fuse. I replaced it and the Expedition started fine for a week. Now replacing the fuse does not work. It burns out as soon as you turn the key. I have tried 3 fuses with the same result.

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You need the schematic... you apparently have a short circuit to ground somewhere... If you are very careful... use a heavy gauge wire to jumper the circuit and whatch for smoke to isolate the short to ground.... be careful... you can really burn stuff up if you aren't paying attention...

Posted on Sep 12, 2009

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Posted on Jan 02, 2017

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I don't know what your problem is. I would suspect your solenoid as you suggest. It is easy checked with a volt ohm meter and a friend. (voltage always present on the battery side - voltage present on starter side when the key is turned to the start position)

Is this a manual or auto? I guess you know there is a switch on the clutch if it is manual - clutch MUST be depressed to start. Im sure you know this!

Check the solenoid. You could jump the solenoid with a auto grade jumper cable to double check your electric (volt/ohm) check.

Thanks for your quesiton at FixYa.com

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More than likely its being caused by a short-circuit to ground in the wiring in your Cranking Circuit.

If it blows the fuse immediately after installing the fuse, its probably a hot-wire. If it blows it the second you try to crank it over, its probably one of the wires between your ignition and the Starter Relay.

To track down the bad wire you'll need a Wiring Schematic for the vehicle and either a Digital Volt/Ohm-Meter or Test-Light and a basic understanding of wiring which is... honestly a little hard to explain over the internet. However, that is the only course that can be taken without taking the vehicle to a qualified Dealership Technician.

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