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Old 06-07-2005, 08:04 PM
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Bared wire, perhaps?

I may be wrong, but the way that I understand gas guages is that the sending unit provides the ground, and that a rheostat is used to provide variable resistance.

When the tank is full, the rheostat is in the "fully grounded" position offering zero resistance, and the guage reads "full"

At 1/2 tank the rheostat is only supplying 50% of the resistance value... etc

So my theory is that if the wire leading to the sender has been chafed and grounded before reaching the sender, it will always display a "full" tank.

HTH,
Don
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