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Fuel gauge always showing full
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Thread: Fuel gauge always showing full

  1. #1
    Ausfish Silver Member
    Join Date
    Jan 2008

    Fuel gauge always showing full

    The last 3 trips my fuel gauge never went off full after using 1/2 to 3/4 of a tank. Has anyone had a similar problem, is it more likely to be the gauge or the sender?. It goes from empty to full when the key is turned on no matter how much is in the tank.

    Thanks Mal.

  2. #2
    Ausfish Silver Member 2rods's Avatar
    Join Date
    Jan 2006

    Re: Fuel gauge always showing full

    Check the wires on the back of the gauge and on the fuel sender unit... they work on resistance (if my trade training memories are correct) and if 1 wire is loose or falls off it will read FULL..

  3. #3
    Ausfish Silver Member
    Join Date
    Mar 2006

    Re: Fuel gauge always showing full

    It might also be worth checking that the float on the sender is able to move freely, it may have ceased in the full position and no longer be moving as the fuel level drops

  4. #4

    Re: Fuel gauge always showing full

    Check your earth wire from the sender, my bet is that it is broken at some point.
    Heath
    Gold Coast
    WWW.GCFISHING.COM

  5. #5

    Re: Fuel gauge always showing full

    Come on guys - it's is not about the guage it is whether it is a ETEC or a OPTIMAX on the back??

    Well someone had to say it!!!

    What I really want is a magic pudding fuel tank

  6. #6

    Re: Fuel gauge always showing full

    Hey Mal ... Since you say its only been happening for the last few trips, I'm with 2 Rods and On-one ... have a close look at the connections them selves for any signs of corrosion (generally a bluey greeny colour) or a crapy earth either will give you at the least an intermitant or more often than not a complete open circuit.

    Failing that, have real close look at the colour of the wires themselves at the terminations as the might have a built of discolouration which commonly denotes an open circuit once again.

    Falling short of using a multimetre (just in case you haven't got access to one), the easy cure should most probably be to reterminate the 4 connections after cleaning the wiring there at each end.

    Cheers
    Greg

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