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Fuel gauge not working properly

  • 18-05-2016 9:50pm
    #1
    kh8
    Registered Users, Registered Users 2 Posts: 164 ✭✭


    hi just changed my fuel pump and when the tank is full the needle is on empty and when the tank is empty the needle is on full why is that


Comments

  • #2
    FortySeven
    Closed Accounts Posts: 3,296 ✭✭✭FortySeven


    DoD the pump come with new sender unit? Check sender and wiring connection for sender.


  • #3
    kh8
    Registered Users, Registered Users 2 Posts: 164 ✭✭kh8


    FortySeven wrote: »
    DoD the pump come with new sender unit? Check sender and wiring connection for sender.

    ya all that came together


  • #4
    FortySeven
    Closed Accounts Posts: 3,296 ✭✭✭FortySeven


    Can the two pin connector go in either way? If so, try turning it round.


  • #5
    Uncle Ben
    Closed Accounts Posts: 1,843 ✭✭✭Uncle Ben


    kh8 wrote: »
    hi just changed my fuel pump and when the tank is full the needle is on empty and when the tank is empty the needle is on full why is that

    Change the F to an E and get tippex for the other one. Sorted.


  • #6
    kh8
    Registered Users, Registered Users 2 Posts: 164 ✭✭kh8


    Uncle Ben wrote: »
    Change the F to an E and get tippex for the other one. Sorted.

    How do mean


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  • #7
    sunny2004
    Registered Users, Registered Users 2 Posts: 2,538 ✭✭✭sunny2004


    Uncle Ben wrote: »
    Change the F to an E and get tippex for the other one. Sorted.

    sounds like an irish solution, Bravo :)


  • #8
    martinr5232
    Registered Users, Registered Users 2 Posts: 2,298 ✭✭✭martinr5232


    The wires for the fuel guage are on backwards.

    When i say guage i mean the part on the fuel pump swap those two wires and it will work.


  • #9
    kh8
    Registered Users, Registered Users 2 Posts: 164 ✭✭kh8


    still cant figure it out total pain


  • #10
    FortySeven
    Closed Accounts Posts: 3,296 ✭✭✭FortySeven


    kh8 wrote: »
    still cant figure it out total pain

    What have you tried so far?


  • #11
    FortySeven
    Closed Accounts Posts: 3,296 ✭✭✭FortySeven


    If you have eliminated incorrect wiring as the cause then it stands to reason the fault is with the new sender itself. There is very little to these. Was it already attached to the pump on receipt? Any way it is operating upside down?

    Any way to put up a picture of the old unit to see what we're dealing with?


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  • #12
    irish bloke
    Registered Users, Registered Users 2 Posts: 2,057 ✭✭✭irish bloke


    You should test the sender for resistance at empty and full. Device could be faulty.

    The ohm reading when the sender is high (tank full) should be lower then when the tank is empty.

    Typically 50ohms full, 300ohms empty.
    Ensure the red meter lead is on the signal terminal (typically the middle) and the black lead is on the ground.


  • #13
    kh8
    Registered Users, Registered Users 2 Posts: 164 ✭✭kh8


    i put the fuel pump in the same way as i took out the old 1 it runs perfect just the needle going the opposite way


  • #14
    martinr5232
    Registered Users, Registered Users 2 Posts: 2,298 ✭✭✭martinr5232


    kh8 wrote:
    i put the fuel pump in the same way as i took out the old 1 it runs perfect just the needle going the opposite way


    Did you swap the wires around ??


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