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Temp gauge drops to 0 when driving

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    Temp gauge drops to 0 when driving

    Hello. I have a weird issue with my instrument cluster. Every time I drive, the temp gauge jumps to 0 and then back up to where it's supposed to be. The time between these jumps changes with the speed.

    This is what I've noticed so far:
    20-30km/h - needle jumps every 10 seconds
    50-60km/h - needle jumps every 5-6 seconds
    etc

    I know the problem has to be somewhere in the cluster because I tried putting the temp gauge from this one into my old cluster and it worked fine there (can't use the old one as the tach doesn't work).

    Any suggestions?

    #2
    Dead SI board. See this article. http://bavrest.com/technical-articles.html
    Owner - Bavarian Restoration
    BMW and European Electronics Repair and Restoration
    www.BavRest.com
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      #3
      Greg - can this not be the brass nut behind the gauge? That usually solve 90% of the issues. No?
      Originally posted by Matt-B
      hey does anyone know anyone who gets upset and makes electronics?

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