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  1. #1
    Bronze Member
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    Jul 2008
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    78
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    Rockholds Ky
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    2006 farm pro 2425

    Default fuel gauge

    hey my fuel gauge was working fine till one day it just stoped and shot past full and stayed there
    its a farm pro 2425 about 5 yrs old
    we checked for power with a test light and it has power on one side but when switching light to check ground the light was very dim
    i know nothing abour fuel gauges so i need help
    Thanks
    Robert

  2. #2
    Super Member greg_g's Avatar
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    Dec 2003
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    Western Kentucky
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    JD3720 Cab, 300X loader with 4-in-1 bucket

    Default Re: fuel gauge

    If I remember, there are two ground wires to check. Sounds like you found the gauge supply wire. The other one connects to the sending unit, varying the value of ground that 12v through the gauge seew. The sending unit itself acts as a variable resistance to ground (that's what makes the gauge move). Then the sending unit itself has it's own ground wire. That's actually the real ground. Anyway, I think one of those two ground wires may be either damaged or loose.

    If not, your sending unit might be shot.

    //greg//
    USN (Ret)
    Former Chinese tractor owner (x4)
    Current John Deere owner

  3. #3
    Super Star Member Diamondpilot's Avatar
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    Daleville, IN
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    Jinma 254/284 Ford 861 Powermaster at work

    Default Re: fuel gauge

    Also check to just make sure the float in the tank is not stuck.

    Chris

  4. #4
    Advertiser
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    Texas

    Default Re: fuel gauge

    It could be the ground or the sender,I'm betting on a bad fuel sender

    Tommy
    Affordable Tractor Sales
    "Your Jinma Parts Superstore"
    Home of compact Jinma, Foton, and Koyker Tractors and Parts, Wood Chippers, Backhoes - Affordable Tractor Sales Company

  5. #5
    Bronze Member
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    Jul 2008
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    Rockholds Ky
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    2006 farm pro 2425

    Default Re: fuel gauge

    the sender is in the tank?
    how do i figure out which it is?

  6. #6
    Super Member greg_g's Avatar
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    Western Kentucky
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    JD3720 Cab, 300X loader with 4-in-1 bucket

    Default Re: fuel gauge

    Quote Originally Posted by robert421960 View Post
    the sender is in the tank?
    how do i figure out which it is?
    Inside the tank, yes. To narrow it down, check/tighten/repair/replace the wires I described. Sometimes they get pinched, the insulation rubs off, the circuit shorts. Given that your gauge is pegged, that would be my first guess.

    Your gauge does return to zero when you shut off the keyswitch, right?

    //greg//
    USN (Ret)
    Former Chinese tractor owner (x4)
    Current John Deere owner

  7. #7
    Bronze Member
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    Location
    Rockholds Ky
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    2006 farm pro 2425

    Default Re: fuel gauge

    Quote Originally Posted by greg_g View Post
    Inside the tank, yes. To narrow it down, check/tighten/repair/replace the wires I described. Sometimes they get pinched, the insulation rubs off, the circuit shorts. Given that your gauge is pegged, that would be my first guess.

    Your gauge does return to zero when you shut off the keyswitch, right?

    //greg//
    Greg you asked this sometime ago and i guess i missed it sorry
    no my gague stays pegged always
    i have not fooled with it anymore but i hate not having it

  8. #8
    Super Member greg_g's Avatar
    Join Date
    Dec 2003
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    Location
    Western Kentucky
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    JD3720 Cab, 300X loader with 4-in-1 bucket

    Default Re: fuel gauge

    With the key in the OFF position, no voltage is supplied to the gauges. They should all read zero or equivalent. If yours stays pegged with the keyswitch off, the gauge is shot. But if the other gauges work with the keyswitch OFF, the problem's in the switch.

    If that doesn't happen, there's a good chance that something in the fuel sender circuit fried the gauge. Which means there's a further chance that you could damage a replacement gauge as well. Get a new gauge, then come back here for instructions before actually connecting it to the tractor's electrical system.

    //greg//
    USN (Ret)
    Former Chinese tractor owner (x4)
    Current John Deere owner

  9. #9
    Bronze Member
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    Rockholds Ky
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    2006 farm pro 2425

    Default Re: fuel gauge

    i posted in another thread that my key switch is also fried so i guess the problems are piling up
    and my oil sending unit isnt working lol

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