Question about Chevrolet Malibu

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When I fill the tank of my car, a 2004 Chev malibu, the gas guage indicates a full tank and then drops to empty. It will do this every time I start the car regardless of how much gas is actually in the tank. What could cause this and how can I fix it?

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The float in the gas tank is most likely the problem. some cars have access to the tank from the trunk others you have to take the tank out. should get someone that knows how to do it to fix it because it can be extremely dangerous working around gas.

Posted on Oct 10, 2010

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1 Answer

The gas guage always sticks on empty eventhough the tank is full


That action is probably a test of the gauge.
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It is more then likely a fuel level sending unit which is located inside of the tank. They are not fun to replace, empty the gas, drop the tank, and then replace the sensor.

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Your needle moving from empty to full and then back to empty indicates that it is trying to set itself (most cars do this each time they are started). So, yes, there seems to be a problem with the sending unit that feeds information to your gas guage. Prior to cracking open your fuel tank, you might try tracking the wires from the back of your guage as far as you can towards the tank. Then track the wires from your tank as far as you can toward the guage. Watch for damaged wires and/or loose connections as you go.

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