6.0L Power Stroke Diesel 2003 - 2007 F250, F350 pickup and F350+ Cab Chassis, 2003 - 2005 Excursion and 2003 - 2009 van

PreCycle Injector Clatter/Buzzing

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Old

Mar 23, 2021 | 06:09 PM

#31

FJ Jerry

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I would think if my Multimeter is only reading 6 volt that my FICM is more than likely the problem even though, I have 49 volts of FICM main power. Am I correct in thinking this?

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Old

Mar 23, 2021 | 06:25 PM

#32

bismic

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I don't see where you ruled out a bad harness.

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Old

Mar 23, 2021 | 06:28 PM

#33

FJ Jerry

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Sorry...I am not ruling out anything. Just asking what you guys think is the more likely scenario. What should I try first?

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Mar 23, 2021 | 06:32 PM

#34

bismic

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To be honest, the best way to test the harness (IMO anyway) is to put an electrical load on each wire feeding an injector, and then seeing what voltage drop you get. A lot of people feed 12V power to the FICM connector and then rig up a headlight to the other end of the wire and then watch the light and measure the voltage at the light.

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Mar 23, 2021 | 07:25 PM

#35

Bitterroot Diesel

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Joined: Sep 2020

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From: Florence, MT

Having your FICM tested would help save you money on throwing parts at the truck. The volt meter isn't going to help much.

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