Question about 2001 Oldsmobile Aurora

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Gas guage not working on 2001 oldsmobile Aurora

When I fill my tank completely the tank shows full but if i keep driving it will stay at full until I stop for any length of time and then it will show the correct amount but only if I have more then half a tank of gas. When there is less then a half tank of gas it will say I have a full tank and then drop suddenly to empty. Please's driving me crazy

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  • Sanon Danier
    Sanon Danier May 22, 2012

    I have the same problem with 2003 Nissan pathfinder. I paid $100 for diagnostic in a dealer shop. They said it will cost a lot money to take the tank out. I told them just leave it and my stopped with a few times. I hated it.



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Most likely you need a new sending unit, located in your tank

Posted on Jun 21, 2009


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2040 john deere fuel guage doesnt work

The problem you explain usually has something to do with the sending unit float. Floats can absorb gas to the point where they just sink to the bottom of the tank. This can happen with both brass and plastic floats. The second thing is the sending unit you installed in your tank. Check to see if when you placed the unit in the tank , the float arm may have hung up on a baffle or some other obstruction in the tank. This would keep the sending unit from showing correctly. Good Luck Friend.

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It could have bad gas or plugged injectors in it. Try a bottle of water remover and octane booster in the tank to keep it running, the next time you fill it up put in a bottle of fuel injector cleaner. I would also change the fuel filter, as any water that it caught has probably started to rust it from the inside. The other thing to try would be to loosen the gas cap after it stalls. Does it **** in air? if so mice have made a nest on top of the gas tank and plugged up the tank vent. You will have to drop the tank to fix this.

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We have the same truck that does the same thing.
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