Question about 1991 Geo Metro

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I have a 1991 geo metro. when i have a full tank of gas, the fuel gauge hand shows only half full. What causes this to happen?

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  • 31 Answers

The floater gauge is sticking. This is part of the fuel sending unit which has your fuel pump connected to it. Try using a fuel additive like seafoam or chevron techron to see if it frees it up, if not the unit will need to be replaced.

Posted on Jan 02, 2011

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Hello. You may have a problem with the fuel sending mechanism in your gas tank or you may have a fungus in your gas tank which is causing it to show much more fuel than you actually have. Drive to an AAMCO repair shop where they will scan your car's computer for free [some auto parts stores now offer this free as well so call around]. If it is mechanical it should show up on the scan, if not you probably have the gas fungus. Some auto parts stores and dealerships now sell an expensive gas tank additive that will kill that fungus. Regards, Joe

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