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Old 07-25-2019, 05:42 AM   #1
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Gas Gauge Failure

I recently started my 2008 Melbourne and the gas gauge said that the tank was empty. As I drove it to the gas station it jumped to Full. Then back to empty with the indicator of low fuel on. I filled it up and drove back to its lot and although I knew that the tank was full, the gauge still said "empty". Any ideas of what I can do? Is there a fuse that could have blown? Any help with this would be appreciated.
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Old 07-25-2019, 08:10 AM   #2
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Odds are a bad or sticky gauge in the tank, usually part of the fuel pump assembly. Check your chassis dealer who will know.

Doubtful you could do it but check some u tubes if you want to try. Caution, lots of weight if the tank has much gas in it. Really a dealer thing if you are not really repair handy and have the tools.

Not likely but maybe some fuel cleaner might help free the sticky gauge.
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Old 07-26-2019, 05:33 PM   #3
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Thanks, I kind of thought that the sensor could be faulty in the tank. I'll check with a mechanic and see what they say. Cheers,
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Old 07-26-2019, 06:07 PM   #4
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My guess is the fuel sending unit in the tank is bad. If you can determine which wire feeds the sending unit (which is just a variable resistor actuated by a float), you can ground that wire and see if your gauge works. The last Ford I had with a gas gauge issue turned out to be the float in the tank. The float was made of brass and developed a small hole along a solder seam. When the float filled up with gas, it permanently sank to the bottom of the tank and the gage always showed the tank was empty. Dropping the tank to get at the sending unit might be a hassle but I suspect it will be necessary in the end.
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