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Old 01-06-2014, 05:28 PM   #1
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Gas gauge reads empty all the time

Went off roading in my 05 unlimited last year and my gas gauge has read empty ever since. Now I can't pass my emissions inspection and the mechanic is saying its because the sensor on top of the tank is bad but other people are telling me I sank the float in the pump. Any suggestions?

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Old 01-06-2014, 07:48 PM   #2
Knows a couple things...

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The fuel gauge sender together its float is spot-welded onto the fuel pump and both are located inside the gas tank. There is no gas gauge-related sensor on top of the tank.

Check the big square electrical plug on the driver's side of the gas tank, maybe you knocked it partially off or damaged its connector. You can get to this plug with the Jeep sitting on the ground, no need to drop the tank to get to it. This plug is what provides power to the fuel pump and connects the fuel gauge sender circuit.

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Old 01-06-2014, 07:53 PM   #3
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Before you start taking part the tank, try to see if the tank is properly grounded and get full connectivity from the tank to the gage. Also test the gage and it's connections.
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Old 01-06-2014, 08:02 PM   #4
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At least that's I know that those are the common causes for aircraft fuel systems... Fuel system in the jeep is not that much different.
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