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What to do when gas gauge goes up and down and the engine light comes on a Ford 2001 Taurus?
Luannrod
First, I would have the check engine diagnostic codes read to determine if they're related to the fluctuating gas gauge (not likely).
The gas gauge 'sending unit' is part of the fuel pump assembly *inside* the gas tank - if it's bad, you'll be having to drop the tank.
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