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Old 23-07-2019   #1
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Speedometer not working

My speedometer, odometer and service doesn't roll.

Is there a common problem? Click image for larger version

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Old 31-07-2019   #2
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Re: Speedometer not working

Sounds like the speed sensor on the gearbox. Has a blue cable running at the back of the gearbox to under the box with the 2 screws on it. If not then clockset or wiring.
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Old 05-08-2019   #3
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Re: Speedometer not working

mk1's have the little plastic worm drive thing that drives the speed sensor do they not, sorry been a long time since i had a chance to mess with a mk1 lol. But in the gearbox under the speed sensor there is (iirc) a plastic worm drive thing and they commonly break so the speed sensor can be working and just not being turned. But if you take the speed sensor out and then with the ignition on spin the sensor, if the speedo reacts the sensor is most likely totally fine and the worm drive needs replacing - if it doesnt react then the opposite is likely true.

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Old 06-08-2019   #4
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Exclamation Re: Speedometer not working

Some of them were 100% mechanical (no "sensors"), speedometer linkage.
https://www.google.com/search?tbm=is...ometer+linkage
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Last edited by GrandePunto PL; 06-08-2019 at 15:21. Reason: GOOGLE THAT -> Images
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Old 06-08-2019   #5
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Re: Speedometer not working

electronic or cable will both have the plastic worm drive thing i'm on about though

you can test same way i said before if its cable though, take the cable off and turn it by hand and the speedo should move. If it does then the worm drive isnt turning the cable, if it doesnt then its either detached from the rear of the clocks or the clocks are not working.

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This thing, my money is on it, I've changed so many of them over the years and they are only getting older and more brittle as time goes by, they snap on the recess for the o-ring.
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Old 4 Weeks Ago   #6
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Re: Speedometer not working

Thanks for help, guys. I found out my old sensor's top broke off. I went out and bought a new one. Works fine now! Click image for larger version

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Old 4 Weeks Ago   #7
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Re: Speedometer not working

New and oldClick image for larger version

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Old 4 Weeks Ago   #8
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Re: Speedometer not working

Yup, thats exactly where every one i have seen breaks goes as well, on that line.

Did the new one not come with a little o-ring in the groove? It should have one, gearbox oil can get past it without the o-ring in there, not likely to leak much if at all but it is meant to be sealed with an o-ring.
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