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  • Speedo stops and starts

    Driving the mk3 tonight and I noticed the speedo was working ('cause I like to know I'm driving on the speed limit). And then it wasn't. The child tells me it sometimes just doesn't work. All the other dials are OK.

    Any clues?

  • #2
    Sadly, they seem to just pack up and die Mine has been replaced once already, but in my case it was both the tacho and speedo. It's possible it could just be a loose wire, so it's worth looking into that first.

    If it has an engine or heartbeat it's going to cost you.

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    • #3
      Impulse sender on the gearbox mate.
      Jmac
      Alba European
      Service, Diagnostics and repairs. Mobile Diag available on request
      Audi/VW/Porsche Factory trained tech 25+ yrs exp
      For people who value experience call 0423965341

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      • #4
        Originally posted by Jmac View Post
        Impulse sender on the gearbox mate.
        Jmac
        What's that?

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        • #5
          Small sensor that plugs into the gearbox and tells the speedo how fast your going
          sigpic
          | MY15.5 Mk3 Octavia vRS TSI | DSG | Black Pack | H&R Springs | 18" BBS RSII |

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          • #6
            Mine is actually doing the same thing at the moment. When the car is cold, the speedo and tacho are fine, yet when i drive for a few km's BOTH the speedo and tacho die.

            Are both your speedo and rev meter not working? if so, it cannot be the speed sensor as that only controls the speedo.

            Im thinking its a loose wire, or a bad earth connection. Tell me how it goes

            cheers
            BRAAAP

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            • #7
              Originally posted by Jmac View Post
              Impulse sender on the gearbox mate.
              Jmac
              This is the one held down by a torx screw, and is connected up with a 3-pin plug?
              Past: Mk3 Golf 2L 8V, Audi 8L A3T.
              Present: Mk3 Golf variant.

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              • #8
                If the rev counter and speedo die at the same time and the other gauges, fuel and temp still work it is the "Dance of Death", one needly will twitch whilst they are not working also.

                This is a known fault and is a fried ecu chip. Only cure is a new or used cluster. $550 from VW or $150 from me respectively. Ks are stored on the speedo, so get one that is similar to your car, ks wise.

                If it is just the speedo and the rev counter still works, like Jmac says its the gearbox speed sensor, bolted on top of the gearbox.
                sigpic Camden GTI Performance. VW / AUDI Specialists
                All Mechanical Work, Log book Servicing, New and used Parts and Imports
                19-20/6 Badgally Road, Campbelltown, 2560
                02 4627 3072 or 0423 051737 www.camdengti.com

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                • #9
                  Mine's doing the opposite to Jacobs, when i start the car the speedo doesnt work but as the car heats up and i drive a few k's the speedo slowly starts working again. The rest of the unit works tacho + fuel gauges etc its just the speedo. I already tried changing the gearbox sender unit and it didnt fix the problem so im a bit clued?

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                  • #10
                    i had the same problem, it was a dodgy connection to the gearbox with the impulse sender, and at the same time my reverse light switch went (which is right beside it)....

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                    • #11
                      Originally posted by Golf Loon View Post
                      If the rev counter and speedo die at the same time and the other gauges, fuel and temp still work it is the "Dance of Death", one needly will twitch whilst they are not working also.

                      This is a known fault and is a fried ecu chip. Only cure is a new or used cluster. $550 from VW or $150 from me respectively. Ks are stored on the speedo, so get one that is similar to your car, ks wise.
                      Golf Loon - I have the same issue and will PM you as I need to buy a cluster from you.
                      MK3 1997 2.0L GL Golf | Stock

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