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Fuel Gauge Stuck on Full


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At first I thought my mileage had improved...then I realized the gauge is stuck on F. Anyone have any ideas? I disconnected/connected battery. No change. The gauge cycles up/down on start up as usual. Just goes to full.

 

I just had to change the alternator. Any chance that had anything to do with it?

 

05 LGT LtD Wagon 5MT

 

thanks!

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fuel level sending unit. 9 years of garbage in the tank corroding the terminals, bet its stuck up. Take it out and clean the contacts, or just replace it. Its basically a rheostat resistor, so there is always the chance that one side of the circuit is shorted to ground or positive.. but most likely the sending unit.
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Lift the fuel pump access under the rear seat.

 

Unplug the electrical connector.

 

If the gauge now goes to empty you have found your culprit.

10' CTS-V, A6, Airraid, 2.4 upper, ID850's, self tuned.

 

SOLD:06' LGT Wagon. BNR16G, Catless UP, DOWN, Hexmods VB, Hexmods diff bushings, BIG TMIC.

Best 0-60: 4.651 by AP

1/4= 13.678@100.73 mph, 1.945 60', Automatic transmission.

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