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Old 02-18-2010, 09:23 PM   #1
duke316
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speedo went nuts

Greetings...........I have a 05 TB and as I was driving my speedo went nuts, it shot up to 100mph and stayed there. Now when I come to a stop the needle goes to the 100mph mark and stays there and when I accelerate It goes to the neutral mark. Its an analog gauge does it have a cable or is it gears?
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Old 02-19-2010, 10:44 AM   #2
maxwedge
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Re: speedo went nuts

Usually caused by the stepper motor in the speed head, all electronic unit.
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Old 02-20-2010, 08:57 AM   #3
duke316
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Re: speedo went nuts

I would assume this involves removing the speedo cluster from the dash to gain access?
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Old 02-20-2010, 11:06 AM   #4
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Re: speedo went nuts

Correct, then the head must be taken apart to replace the stepper.
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Old 03-04-2010, 10:31 AM   #5
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Re: speedo went nuts

But if you can solder, it's a quick job. Bad design of the early steppers, but Ebay vendors have 'em for $5 of $6 each plus shipping. Recommend replacing all six if you don't want to go back in there again.
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