Have Ford Questions? Ask a Mechanic for Answers ASAP
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We are going to need to check for power going into and coming out of both the inertia switch and the fuel tank selector switch to see where we are losing power on the fuel pump circuit affecting both fuel pump when this condition occurs.
The power wire going into the inertia switch is brown. The wire leaving the inertia switch is pink/black and then turn into a red/yellow wire before going into the selector switch.
Here is a wiring diagram of this circuit. Let me know!
Its the switch where you select which fuel tank you would like to use. Do you see it inside the vehicle?