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General Information => General => Topic started by: burn_your_money on July 30, 2013, 06:08:50 am
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Ok, I'm assuming the issue is with my speedo and that I'll have to replace the whole unit.
The speedo reads about 30% too high (it says 130 when I'm only doing 100) but my odometer is bang on the money.
What part needs replacing?
84 Jetta
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The needle is off on its orientation? It is consistently that much higher than every speed?
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The only accurate speed reading I get is 0. 50 reads about 65 and 100 reads about 130. I'm not 100% sure that it's quite that linear, I'd have to check it with my GPS again. Weird eh?
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Mine was off 15 too high after i modded my cluster, "i took off the needle" so i opened it up again and drove around for a bit with my gps and kept pushing the needle down until it read right. I had to brake off the plastic stop pin "early 90's mk3 cluster" and it points almost right down now but it reads 100% accurate :)
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Mine does that too, and the needle shakes in the low range. If I'm going 50, it reads 60, then stretches to about 15 off by 401 speeds...
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If the needle shakes that's usually an issue with the speedo cable binding slightly.
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I've heard in mk1s anyways at least ,
sometimes a bad ground wire can allow grounding to try and occur thru the speedo head with disasterous results. It'll heat the springs and other delicate items in the speedo head.