What wire is this???
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Junior User
Joined: Jun 2010
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What wire is this???
I was changing my fuel filter and fuel drain valve and noticed this bare wire that was looped up and taped. It appears that it goes to the passenger bank of the engine but I do not know where, there is not a slot for it where it would go under the valve cover. I have a '99 f350 210K miles
Heres the link to photobucket to view the wire in question
Heres the link to photobucket to view the wire in question
Postmaster
Joined: Jul 2006
Posts: 4,993
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From: Bend, OR
I was changing my fuel filter and fuel drain valve and noticed this bare wire that was looped up and taped. It appears that it goes to the passenger bank of the engine but I do not know where, there is not a slot for it where it would go under the valve cover. I have a '99 f350 210K miles
Heres the link to photobucket to view the wire in question
Heres the link to photobucket to view the wire in question
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Joined: Sep 2011
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From: Delaware
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Senior User
Joined: Jul 2009
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From: Lynnwood, WA
My guess is that its a grounding or some type of shield wire. As current passes through the wires it created EMI (electromagnetic interference). This could be used to shield that from getting out affecting other sensors or from getting in causing issues with the injector firing.
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From: Damon (South East Texas)
My guess is that its a grounding or some type of shield wire. As current passes through the wires it created EMI (electromagnetic interference). This could be used to shield that from getting out affecting other sensors or from getting in causing issues with the injector firing.
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From: Damon (South East Texas)
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Joined: Jan 2002
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From: La La Land
Since all four injector drive voltages of each bank are all contained within the same shield, I'd rather think that's not the reason. If cross-firing were a problem, this arrangement would only make it worse.
I suspect that our ability to hear the radio would be severely compromised if they weren't there. There's 120 volts of square wave inside those shields that's trying to emit all kinds of EMI/RFI (Google "an infinite number of odd harmonics" for an explanation).
Heck, the guy in the next lane over in traffic couldn't hear his radio, either!
Remember that the windshield motor "hash" noise sometimes confuses the CPS signal. Can you imagine what higher-voltage square wave emissions would do?
There are plenty of other digital signals that our trucks need to operate that would also be compromised (OSS, TSS, VSS, ABS, etc.) as well.
Even trucks have to pass FCC radio-frequency emissions tests.
Pop
I suspect that our ability to hear the radio would be severely compromised if they weren't there. There's 120 volts of square wave inside those shields that's trying to emit all kinds of EMI/RFI (Google "an infinite number of odd harmonics" for an explanation).
Heck, the guy in the next lane over in traffic couldn't hear his radio, either!
Remember that the windshield motor "hash" noise sometimes confuses the CPS signal. Can you imagine what higher-voltage square wave emissions would do?
There are plenty of other digital signals that our trucks need to operate that would also be compromised (OSS, TSS, VSS, ABS, etc.) as well.
Even trucks have to pass FCC radio-frequency emissions tests.
Pop
