According to the fsm, the fuel pump is a variable duty cycle pump. Even after monitoring it with an oscilloscope, it would be difficult to replicate any functional purpose. I'm not exactly sure why you would need or want to mess with the fuel. Perhaps you can further enlighten me on the purpose.
I have searched the Web to no avail. This issue affects both Ford Expeditions and Lincoln Navigators. I found many threads on the issue, but never a resolution for those of us that had a problem beyond a simple relay or the likes. After spending probably a hundred or so hours going through...
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