dual tanks do not switch and gauge dosn't work

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Scooter - 12 Dec 2007 19:10 GMT

I have a 1986 f-150 and the fuel gauge is inop and the tanks do not
switch. I am guessing it is probably the tank selector switch as this
seemed to happen all at once. Suggestions?? Diagrams???Anyone know of
testing proceidures.

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Big Al - 13 Dec 2007 06:31 GMT

>I have a 1986 f-150 and the fuel gauge is inop and the tanks do not
> switch. I am guessing it is probably the tank selector switch as this
> seemed to happen all at once. Suggestions?? Diagrams???Anyone know of
> testing proceidures.

There was a recall on the valve that switches the tanks. It's under the
truck at the drivers door. The switch on the dash switches the fuel pumps,
fuel pressure does the rest. On some, if you fill the tank it's running on,
fuel will be pumped into the other tank until it starts running out.

Al

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david - 13 Dec 2007 11:20 GMT

>>I have a 1986 f-150 and the fuel gauge is inop and the tanks do not
>> switch. I am guessing it is probably the tank selector switch as this
[quoted text clipped - 8 lines]
>
> Al

The gauge connections are switched at the dash switch, IIRC. If the
gauge isn't working, then I would suspect the selector switch as a
possibility.

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