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Does tacho run off coil or alternator ?

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  • Does tacho run off coil or alternator ?

    1995 T4 petrol 2 ltr. does the tacho run off coil or alternator ?. The issue I have is that the tacho has become very 'jerky' in its movement and when i turn ignition off it stays on 1000 rpm. (the dial not the motor) if i then just flick ignition on and off again the dial goes to zero !! any thoughts ?

  • #2
    Powered by the electronic ignition.
    That would more than likely be a sticky instrument movement at a guess.

    Just to add - if it sticks again when turned off, give it a tap on the glass or around the instruments to see if it moves back to O.
    Last edited by Syncrotek; 22-08-2015, 11:30 AM. Reason: additional info

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    • #3
      It will be the servo motor in the cluster as these do play up and act as you described.

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      • #4
        Originally posted by Syncrotek View Post
        Powered by the electronic ignition.
        That would more than likely be a sticky instrument movement at a guess.

        Just to add - if it sticks again when turned off, give it a tap on the glass or around the instruments to see if it moves back to O.

        OK thanks for that, will try next time

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        • #5
          Have you tried hitting the top of the dash?

          Probably won't fix it as such, but it'll maybe confirm where the problem lies.
          '07 Transporter 1.9 TDI
          '01 Beetle 2.0

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          • #6
            Thanks all, hitting the dash worked fine. Went for a long drive today and all seems to have settled.

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