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Thread: fuel gauge issues

  1. #1
    JoeyJoeJoeJuniorShabadoo Domestic Engineer joey's Avatar
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    Default fuel gauge issues

    Im a bit of a novice and im in the midst of replacing my fuel gauge.... ive hit a snag and basically just need some help to answer what i need to do to get the face plate type thing out so i can change it...



    anyhelp would be great, cheers
    Last edited by joey; 04-12-2006 at 06:15 PM.
    Mr Shabadoo.
    Joeys 1975 TA22 - the weird lookin' front one....
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  2. #2
    Junior Member Backyard Mechanic jonra23's Avatar
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    Default Re: replacing fuel gauge for TA22

    Do you have the knobs pulled off heater controls?

    regards
    jon

  3. #3
    ......... Carport Converter jeffro ra28's Avatar
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    Default Re: replacing fuel gauge for TA22

    i think you will find that you will need to carefully pull of the nobs of the heater and fan switches and then remove the display panel from the facia.
    You may also find that the air vents are connected at the back and you will probably find more screws there to remove.

    Also, when your pulling it out, you may need to sneak your hand up the back of the facia and disconnect things like your cigarette lighter and rear window heated wired defog.

    Hope that helps

  4. #4
    JoeyJoeJoeJuniorShabadoo Domestic Engineer joey's Avatar
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    Default Re: replacing fuel gauge for TA22

    thanks guys for that... didnt think of the knobs
    The facia came out out 3/4 so i didnt bother undoing the rest of the heating stuff in the back of it (partly because i dont really trust myself lol)

    Sadly the problem still remains with the new gauge... When the car is running or the ignition turned on the fuel gauge goes up a few notches, stays there for a couple of seconds and then falls back down to zero. Any idea of whats wrong? btw i've put in a new sender unit which didn't do anything either.... I don't wanna part with $250 to take it to an auto electrician!
    Mr Shabadoo.
    Joeys 1975 TA22 - the weird lookin' front one....
    Daily JZX100

    New additions: RA23 Circuit racer. 180sx drift box. R32 GTR Daily. MS65 Crown cruiser.

  5. #5
    JoeyJoeJoeJuniorShabadoo Domestic Engineer joey's Avatar
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    Default Re: replacing fuel gauge for TA22

    thanks guys for that... didnt think of the knobs
    The facia came out out 3/4 so i didnt bother undoing the rest of the heating stuff in the back of it (partly because i dont really trust myself lol)

    Sadly the problem still remains with the new gauge... When the car is running or the ignition turned on the fuel gauge goes up a few notches, stays there for a couple of seconds and then falls back down to zero. Any idea of whats wrong? btw i've put in a new sender unit which didn't do anything either.... I don't wanna part with $250 to take it to an auto electrician!

    The exact same thing happened with the new gauge.....

    Mr Shabadoo.
    Joeys 1975 TA22 - the weird lookin' front one....
    Daily JZX100

    New additions: RA23 Circuit racer. 180sx drift box. R32 GTR Daily. MS65 Crown cruiser.

  6. #6
    Senior Citizen Chief Engine Builder "Z" UTE's Avatar
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    Default Re: replacing fuel gauge for TA22

    3 parts to the circuit, sender, guage, and in between, the wires. Gota be in the wiring, if you have new sender and guage. Check power supply to sender, and to guage, and check earth's.

    "To fully remove a TA22 instrument facia, the heater control cable's need to be disconnected at the heater, not the facia."


    cheers Chuck
    "What man can build, man can fix!"
    MS51Crown Coupe,
    GSV40R Aurion luxo tourer. One TA22 currently receiving some TLC prior to paint One RS56 Crown ute under construction, 2 x TA22's awaiting rebuilds. Toyota Crown RS47J ute in need of serious TLC. Toyota Crown Custom Wagon MS53 daily hauler stocko!

  7. #7
    Junior Member Backyard Mechanic jonra23's Avatar
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    Default Re: replacing fuel gauge for TA22

    Do the rest of your gauges work OK?, sounds like a power suply problem.


    regards
    jon

  8. #8
    JoeyJoeJoeJuniorShabadoo Domestic Engineer joey's Avatar
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    Default Re: replacing fuel gauge for TA22

    All the other gauges worked perfectly it's just the fuel gauge..... would they all be running to the same earth?
    Mr Shabadoo.
    Joeys 1975 TA22 - the weird lookin' front one....
    Daily JZX100

    New additions: RA23 Circuit racer. 180sx drift box. R32 GTR Daily. MS65 Crown cruiser.

  9. #9
    JoeyJoeJoeJuniorShabadoo Domestic Engineer joey's Avatar
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    Default Re: replacing fuel gauge for TA22

    ..... and to the same power supply?
    Mr Shabadoo.
    Joeys 1975 TA22 - the weird lookin' front one....
    Daily JZX100

    New additions: RA23 Circuit racer. 180sx drift box. R32 GTR Daily. MS65 Crown cruiser.

  10. #10
    Senior Citizen Chief Engine Builder "Z" UTE's Avatar
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    Default Re: replacing fuel gauge for TA22

    Same power supply for all guages. Earth for sender is the only difference. You have not been painting near your fuel tank have you?

    Wiring diagrams are your friend.

    cheers Chuck.
    "What man can build, man can fix!"
    MS51Crown Coupe,
    GSV40R Aurion luxo tourer. One TA22 currently receiving some TLC prior to paint One RS56 Crown ute under construction, 2 x TA22's awaiting rebuilds. Toyota Crown RS47J ute in need of serious TLC. Toyota Crown Custom Wagon MS53 daily hauler stocko!

  11. #11
    JoeyJoeJoeJuniorShabadoo Domestic Engineer joey's Avatar
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    Default Re: replacing fuel gauge for TA22

    nope havn't been painting near the tank at all.... What do you mean by earth from the sender unit because all that they both consisted of was actual unit with the 6 or so screws and the connection at the top of it..... i might just go check that wire now.
    Mr Shabadoo.
    Joeys 1975 TA22 - the weird lookin' front one....
    Daily JZX100

    New additions: RA23 Circuit racer. 180sx drift box. R32 GTR Daily. MS65 Crown cruiser.

  12. #12
    Senior Citizen Chief Engine Builder "Z" UTE's Avatar
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    Default Re: replacing fuel gauge for TA22

    The fuel guage sender unit earth's through the 6 screws to the tank. Ensure tank is securely mounted to the car, clean the connector on the sender unit, and physically check the continuity between the sender unit, and the guage. Multimeter's are as cheap as $12.00 -$15.00at the moment, not designed for full time sparky, but will last a youngfella quite a few years.

    cheers Chuck.
    "What man can build, man can fix!"
    MS51Crown Coupe,
    GSV40R Aurion luxo tourer. One TA22 currently receiving some TLC prior to paint One RS56 Crown ute under construction, 2 x TA22's awaiting rebuilds. Toyota Crown RS47J ute in need of serious TLC. Toyota Crown Custom Wagon MS53 daily hauler stocko!

  13. #13
    JoeyJoeJoeJuniorShabadoo Domestic Engineer joey's Avatar
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    Default Re: replacing fuel gauge for TA22

    It is secure and i cleaned the connector....
    Last edited by joey; 04-12-2006 at 06:16 PM.
    Mr Shabadoo.
    Joeys 1975 TA22 - the weird lookin' front one....
    Daily JZX100

    New additions: RA23 Circuit racer. 180sx drift box. R32 GTR Daily. MS65 Crown cruiser.

  14. #14
    JoeyJoeJoeJuniorShabadoo Domestic Engineer joey's Avatar
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    Default Re: replacing fuel gauge for TA22

    will test the sender unit tonight.....
    Last edited by joey; 04-12-2006 at 06:16 PM.
    Mr Shabadoo.
    Joeys 1975 TA22 - the weird lookin' front one....
    Daily JZX100

    New additions: RA23 Circuit racer. 180sx drift box. R32 GTR Daily. MS65 Crown cruiser.

  15. #15
    Junior Member Backyard Mechanic jonra23's Avatar
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    Default Re: replacing fuel gauge for TA22

    Get someone to watch the gauge for you and earth the wire that hooks to the sender directly to earth, gauge should go full travel, don't hold for too long.

    Check for continuity from sender body through to car body.

    regards
    jon

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