1994.5 - 1997 7.3L Power Stroke Diesel

electrical issues

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Apr 6, 2025 | 10:15 PM

#1

Jack C Thompson

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4wd Low

Joined: Aug 2023

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electrical issues

This all happened at once so ill give the rundown, any advice or help would be greatly appreciated. When I turn on the truck my speedometer doesn't work, no mileage is displayed on the cluster, I have power to my radio but not to my speakers, and my overdrive light flashes aswell as the transmission shifts horribly now. again any advice or help is greatly appreciated.

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Old

Apr 7, 2025 | 09:29 AM

#2

BuckHammer

Cargo Master

Joined: Jul 2010

Posts: 3,014

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Club FTE Silver Member

I believe the computer gets the speed signal through the speedometer module. If that is not working, I suppose the flashing O/D off light and horrible shifting is not a surprise.

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