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Fuel Guage issues

Discussion in 'Fuel System & Electrics' started by VZR69, Sep 27, 2015.

  1. VZR69

    VZR69 Active Member

    Messages:
    218
    Location:
    Grantham
    Hi all, I'm trying to get the fuel guage working on my daughters 69 bay. I have fitted a new sender and also fitted new vibrator to back of guage and it still isn't working. I'm thinking I have it wired wrong. Is there a power wire somewhere in the system? I'm still learning this electrical caper and currently I have the sender wire running to the right side of the vibrator and a wire running from left side of vibrator to left side of guage then an earth wire from right side of guage to ground on back of guage cluster.
    Any help appreciated
    Greg
     
  2. cbus

    cbus Well-Known Member

    Messages:
    12,609
    Location:
    sunshine coast
    have to dig up the circuit to comment on your points but also check the screw that secures the earth wire to the body near sender.
    replaced sender and chased problem for a while and it turned out to be a bad earth at that point
     
  3. Mordred

    Mordred Super Moderator Staff Member

    Messages:
    2,887
    Location:
    Penna, Hobart
    Not sure if it is the same on the 69, but the later ones are most definitely powered from the dash, if I recall in to the vibrator (or regulator) and then through the meter, then on to the sender. Cant find the wiring diagram atm. The vibrator reduces the voltage from 12v down to 4.8v (Alpal will either be saying well done or no no no!!!). (The reason is the voltage across the resistor in the sender needs to have a constant value to give a consistent reading at the same fuel level, no matter the voltage in the rest of the electrical system, which changes with load on the alternator/battery.)

    What this means for you is if you have a bad earth or connection (which if you imagine a kink in a hose reducing the water flow) the voltage (the pressure of the electricity if you will) will be reduced even further before it gets to the sender, or restricted going to earth after it. With the lower voltage of 4.8 V, the connections are even more susceptible to faulty connections and damaged cables.

    Hope that helps a bit.

    Adrian
     
  4. VZR69

    VZR69 Active Member

    Messages:
    218
    Location:
    Grantham
    I think i need a power wire to the vibrator, but I'm not sure where it goes . Would it go on the left side of the vibrator (opposite side to the brown sender wire)?
    Surely it's not too complicated for an electrical newb like me. :(
     
  5. deepburn13

    deepburn13 Member

    Messages:
    257
    Location:
    Adelaide
    Hi, these two pics helped me when I had problems.
    Cheers unnamed (5).jpg images (14).jpg
     
  6. VZR69

    VZR69 Active Member

    Messages:
    218
    Location:
    Grantham
    Yesss!!! I see where I have it wrong.
    A simple bloke like me obviously needs photos!!!!
    Thanks deepburn and everyone else for help, cant wait to see if it works tomorrow.
    Cheers, Greg
     
  7. deepburn13

    deepburn13 Member

    Messages:
    257
    Location:
    Adelaide
    No probs! I'm a photos guy as well haha
     
  8. Kai

    Kai Well-Known Member

    Messages:
    4,760
    Location:
    Sydney, NSW
    what type of sender do you have?
    [​IMG] [​IMG]

    [​IMG]
    what type of gauge do you have? dis regard the fact they are clocks. just need to know the colour of the face.
    [​IMG]
     
  9. Mordred

    Mordred Super Moderator Staff Member

    Messages:
    2,887
    Location:
    Penna, Hobart
    Beat me to it. The pic is worth a thousand of my words at least.

    Adrian
     
  10. Kai

    Kai Well-Known Member

    Messages:
    4,760
    Location:
    Sydney, NSW
    the tube type sender ONLY works with grey face silver disc fuel gauge - it does not have a voltage stabiliser.

    Lever type ONLY works with grey no disc and black face fuel gauges - these do have voltage stabiliser.
     
  11. VZR69

    VZR69 Active Member

    Messages:
    218
    Location:
    Grantham
    I have changed the guage cluster to a later model metric one which has a grey face...............but I have a tube type sender.....???????
    So the voltage stabiliser is different to the vibrator??
     
  12. Kai

    Kai Well-Known Member

    Messages:
    4,760
    Location:
    Sydney, NSW
    same thing that sender is not compatible with the gauge. that is your problem. you need the grey face with silver disc. and like magic your gauge will work.
     
  13. VZR69

    VZR69 Active Member

    Messages:
    218
    Location:
    Grantham
    Are the silver disc speedos available in kph?
     
  14. Kai

    Kai Well-Known Member

    Messages:
    4,760
    Location:
    Sydney, NSW
    not in australia, try germany. you can switch the speedo out do you have the correct fuel gauge?
     
  15. VZR69

    VZR69 Active Member

    Messages:
    218
    Location:
    Grantham
    I will check on guage tommorow, haven't had a chance to see if it all works yet
     
  16. Tickle

    Tickle Active Member

    Messages:
    293
    Location:
    Seaford Vic
    I'm hoping someone can help me with my fuel gauge at Revolks, I can't work anything out...so frustrating as everyone else seems to get it
     
    Jerome likes this.
  17. KahunaKombi

    KahunaKombi Super Moderator Staff Member

    Messages:
    21,027
    Location:
    Bracken Ridge, Qld
    Have you tried to look here http://www.ratwell.com/ it is a good source to things and easy to follow.
     
  18. Tickle

    Tickle Active Member

    Messages:
    293
    Location:
    Seaford Vic
    I've looked everywhere and have lots of instructions, I just don't seem to understand electrics. Mechanical I'm fine, just not electrics...funny as I work for an electric motor company lol
     
  19. KahunaKombi

    KahunaKombi Super Moderator Staff Member

    Messages:
    21,027
    Location:
    Bracken Ridge, Qld
    Any of these help

    [​IMG]

    This video may help - I haven't watched it but you never know

     
  20. Alpal

    Alpal Moderator Staff Member

    Messages:
    8,730
    Location:
    Melbourne Bend of Islands
    Will be there and can have a look. What is the problem??
     

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