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Fuel gauge

This is a discussion on Fuel gauge within the General Help forums, part of the LSx Technical Help Section category; I've got 98 Formula and the fuel gauge is going all over the place. I could have just filled up ...

  1. #1
    Member 10erg01's Avatar
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    1998 Firebird Formula

    Fuel gauge

    I've got 98 Formula and the fuel gauge is going all over the place. I could have just filled up all the way and it could read at 3/4 tank. I was wondering if this could be a faulty sensor or something.

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    Senior Member JayTA98's Avatar
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    Mean Black
    1998 Trans Am

    Quote Originally Posted by 10erg01 View Post
    I've got 98 Formula and the fuel gauge is going all over the place. I could have just filled up all the way and it could read at 3/4 tank. I was wondering if this could be a faulty sensor or something.
    it could be the fuel sender. thats inside the tank. Have you run any fuel treatment stuff recently?

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    Member 10erg01's Avatar
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    1998 Firebird Formula

    Quote Originally Posted by JayTA98 View Post
    it could be the fuel sender. thats inside the tank. Have you run any fuel treatment stuff recently?
    No not recently, do you have any specfic brand recomandations?

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    Senior Member JayTA98's Avatar
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    1998 Trans Am

    i will try some marvel mystery oil and see if helps clean the contacts some. Most of the time the sender gets dirty. you might need to replace it.

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    '02 WS.6 / '07 Suburban

    Your best attempt at a "cheap fix" is to run a bottle of Chevron Techron Fuel System cleaner through the tank. Follow the instructions and add it to approximately 12 gallons of fuel and then run it until almost empty. Repeat this again for the best result. Sulfer deposits from the gasoline can mess up the sender and this should take care of the problem if that is what is affecting your gauge reading.

  6. #6
    Junior Member Jorgens's Avatar
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    Mine did the same thing just before the fuel pump went. All that crap is in the same housing or something like that. Good Luck!!!

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