Fuel Gauge 2CV
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Thread: Fuel Gauge 2CV

  1. #1
    Fellow Frogger!
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    Default Fuel Gauge 2CV

    My fuel gauge is not working. Got a mechanic to fit a new one. When I drove home I noticed it was still not working! You would think they try it out. I went back and he told me he could not do it. It needed an auto electrician to fix it.
    Can somebody show me the wiring at the gauge and at the dash. It has three wires at the dash.
    Once I know I'll put new wiring in.
    Herman

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  2. #2
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    Herman,
    small speedometer ( Special, Dolly, etc) or large speedometer ( Club)?
    This is how it's hooked up on the small version and if you have a close look, there should are paint marks on the instrument with the colours matching those of the yellow, purple and brown sleeves...

    Connections from loom to speedometer/fuel gauge on a 2CV Special by slcchassis, on Flickr

  3. #3
    Fellow Frogger!
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    Are you sure it's not the sender in the tank or no earth at the tank ?


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  4. #4
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    The sender was renewed. So now I have to find out about the electrical.

    Quote Originally Posted by petermelb View Post
    Are you sure it's not the sender in the tank or no earth at the tank ?


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  5. #5
    COL
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    Quote Originally Posted by Winkbul45 View Post
    The sender was renewed. So now I have to find out about the electrical.
    Was the sender replaced with the correct one?

    A quick test that you can do to check the operation of the fuel gauge is to turn on the ignition, remove the wire from the sender the gauge should be either full scale or at its zero point. Now short the wire to the tank and the gauge should read in the other direction. If this is the case the gauge and associated wiring is all good and your problem is the sender unit.
    Regards Col

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    Diagram. J13 from 28 to 21 Fuel Gauge 2CV-2cv-wiring.jpgis the sender wire.

  7. #7
    JBN
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    Bad earth can cause a fuel gauge to flicker. Mine does but I can't be bothered rectifying it. It is accurate enough and nearly every time I refuel it takes 14 to 18 litres. A 5 litre plastic jerry can full of petrol in the boot is always handy IF you have doubts about how accurate the gauge is.

    I find the biggest pain is applying just enough pressure on the nozzle handle at the petrol bowser to get a fast enough fill rate without petrol overflowing onto the rear mudguard. Modern days bowsers are not designed for browsers, only for gluttons with big appetites.

    John

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