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Intermittent speedometer--temperature related. Does something need resoldering? 700

posted by  someone claiming to be Volvoman on  Tue Nov 28 08:05 CST 2006 [RELATED]

Hello Blue Horse!

I have the same problem with my speedo (VDO) and my best guess is that the needle sticks mechanically when cold. Why?

1. I have resoldered all joints on the speedo with no improvement.
2. A whack on the cluster makes it work when cold.
3. When working, it will continue to do so for the rest of the day. My opinion is that a bad joint would make the needle jump up and down continuously.
4. The odo keeps running even though the needle doesn't move (rules out a bad sender unit)

So, my next move is to lubricate the needle using some kind of high grade watch oil, alternatively some electro cleaner (not WD40). If that doesn't work, I have to open the unit to see what makes the needle stick.

Good luck! (to both of us) :-)






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