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A fuel gauge fluctuating between empty and functional could be caused by several issues, including a faulty fuel sender unit, a loose or corroded electrical connection, or a malfunctioning gauge itself. Additionally, if there are intermittent issues with the vehicle's grounding or if the fuel level is low, it may cause erratic readings. It's advisable to have the fuel system inspected by a professional to diagnose and correct the issue.

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2d ago

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