Bad ground mess with FICM????? - Ford Powerstroke Diesel Forum
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Old 05-02-2011, 09:26 PM
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Question Bad ground mess with FICM?????

Is it possible for a bad ground to mess with the FICM? If so dose anyone know where the ground points to check would be located on an 03' 6.0 FX4 supercab... Long story short my insight has been reading 24-26v for FICM since i installed it a few weeks ago, then today turn it on 47-48V engine cranked over perfectly ran it a min then turned it off back to 24-26V and thats the reading i've gotten ever since this afternoon.
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Old 05-02-2011, 09:53 PM
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Yes, a bad ground on the FICM will create havoc.
I believe that the ground for the FICM is on the turbo heat shield bracket, where it bolts to the motor, down low theres a stud that has a ground wire on it.
You can add a ground wire to it as well. Using the bracket and grounding that to the engine.
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Old 05-02-2011, 10:45 PM
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Awesome, I will have to check that out in the morning. I did just order a swamped 58V for the truck as well but i want to make sure i have no ground issues before i install it!
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