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Thread: Fuel gauge not working in my mav

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    Advanced elmo4eva's Avatar
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    Fuel gauge not working in my mav

    Hey all just wondering how to fix a fuel gauge its not working

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    Start by checking the fuse for the warning lamps and gauges. Does it have power on both sides of the fuse with the ignition on?

    Do the other gauges and warning lights in the instrument cluster work?

    In the rear floor, above the fuel tank, there is an inspection plate. This enables access to the fuel sender without having to drop the fuel tank. Remove this cover and you will see the wires for the fuel gauge....should be a yellow with a black trace wire and a black wire. Disconnect the plug from the fuel tank and with some wire or paper clip (just don't damage the pins in the plug) join the yellow with a black trace wire and the black wire together. Ignition on the fuel gauge should now read full? if it doesn't try connection the yellow with a black trace wire straight to ground.

    If the gauge does read full you will need to remove the fuel sender unit from the tank and make sure the float is still connected and hasn't fallen off. Then perform resistance checks as per attachment.

    If the gauge doesn't read full you will need to remove the instrument cluster and check continuity of the yellow with a black trace wire.
    Attached Images Attached Images

  3. The Following 3 Users Say Thank You to Yendor For This Useful Post:

    93patrol (31st December 2013), Bigcol (31st December 2013), jack (31st December 2013)

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    Legendary 93patrol's Avatar
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    your a bloody guru Yendor

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    Hardcore jack's Avatar
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    Quote Originally Posted by 93patrol View Post
    your a bloody guru Yendor
    Never ceases to amaze me
    Cheers
    Jack

    2024 Isuzu MUX
    Formerly 2012 Simpson 50th Anniversary Edition.

    WARNING: Towballs used for recoveries can, and do kill people and damage property.

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    Legendary my third 256's Avatar
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    what about a bad earth
    2007 GU 6 /ST-L / MYO8 / DIESEL/AUTO /MOONSTONE /pro vent 200
    OH LEATHER IS NICE

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    Advanced elmo4eva's Avatar
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    Quote Originally Posted by Yendor View Post
    Start by checking the fuse for the warning lamps and gauges. Does it have power on both sides of the fuse with the ignition on?

    Do the other gauges and warning lights in the instrument cluster work?

    In the rear floor, above the fuel tank, there is an inspection plate. This enables access to the fuel sender without having to drop the fuel tank. Remove this cover and you will see the wires for the fuel gauge....should be a yellow with a black trace wire and a black wire. Disconnect the plug from the fuel tank and with some wire or paper clip (just don't damage the pins in the plug) join the yellow with a black trace wire and the black wire together. Ignition on the fuel gauge should now read full? if it doesn't try connection the yellow with a black trace wire straight to ground.

    If the gauge does read full you will need to remove the fuel sender unit from the tank and make sure the float is still connected and hasn't fallen off. Then perform resistance checks as per attachment.

    If the gauge doesn't read full you will need to remove the instrument cluster and check continuity of the yellow with a black trace wire.
    hey mate yer i checked that i had a yellow wire with a green trace and a plane yellow wire and a earth only thing worked wen i put the yellow and green wire together with the eath as the fuel light and when i checked the yellow and earth the gauge went up so u think i should check the fuel sensor

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    Yes you will need to pull the fuel sender out and check it.

    Your fuel gauge reading full when you joined the Yellow wire and earth together means that everything is good from the fuel gauge down to the tank (don't worry about the colour being slightly different, wiring diagrams aren't always correct).

    The low fuel light coming on when you joined the Yellow with a green trace wire to earth is normal.

    Cheers Rodney

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    elmo4eva (5th January 2014)

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