1994 GT Fuel level problem - Mustang Evolution

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Old 07-20-2015, 06:38 PM   #1
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Region: Ohio
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1994 GT Fuel level problem

just bought a 94 GT and the gas gauge doesn't work.

It always reads just over the "full" line, when I turn the key to the "ON" position it dips down just below the "full" line and then climbs back above.

I disconnected the fuel pump/sending unit harness and turned the key on and it does the same thing.

I've read about the anti-slosh module, but everything I've read about that says the guage will say empty all the time and not move.

now, with unplugging the harness and it doing the same thing, that says to me that either A: the sending unit/float isn't the issue, or B: the sending unit IS the problem and has infinite resistance so unplugging the harness wouldn't make a difference.

anyone have any input on this? and does anyone know what wires from the harness plug in the trunk go to the sending unit itself? my repair manual doesn't say anything about the wire color or known good resistance values for the sending unit.
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