Empty Gas Tank light comes on - Mustang Evolution

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Old 03-17-2014, 09:19 PM   #1
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Empty Gas Tank light comes on

Has anyone else had this problem before? This happened before and now it is happening again. Every so often, when my fuel gauge gets between a quarter and a half, the gauge will just drop to empty and my "empty fuel tank" light will come on. Although when I go to fuel the car back up, the gauge takes into account the gas that would have been in there before it showed that it was "empty". Anyone know what could be going on?
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Old 03-18-2014, 05:11 AM   #2

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Faulty fuel level sensor? To get to it, you remove the rear seat, and there's an access cover to get to the cover that is removed to gain access to the fuel pump/fuel level sensor.

I found this TSB that describes your symtoms, but it is for the 2011 Mustang:

Ford issues TSB for 2011 Mustang regarding fuel pump problems | Mustangs Daily

I don't know of any test though that can be done prior to accessing the fuel level sensor. They sometimes toss a P0463 code (Fuel level sensor A circuit High Input).

Here's a pic of the whole assembly that outlines the sensor:
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Old 03-18-2014, 12:53 PM   #3
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Try this

Go to your Walmart or auto store and Buy a bottle of """"TECHRON"" pour it in a full tank and it may or may not fix the problem. If it is just something sticking it may clean what is causing the problem. If it is a mechanical malfunction it may have to be replaced. STP Total Fuel system cleaner may also work Your Choice.
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