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Tach Needle not idling but will respond

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    Tach Needle not idling but will respond

    Hi Team,

    Today my tach stopped functioning. All the other gauges and lights on the dash work fine though. I've had this happen to me once or twice before but it eventually started working again. Figure I'd give it a shot and ask here.

    I've also replaced the SI board from BAV Restoration around 3 years ago, I'm hoping it's not that.

    Below is a short clip




    #2
    Try replacing fuse 10, 12 and 21 with new 7.5A fuses. Also inspect the SI board for screw damage.

    http://bavrest.com/technical-articles.html
    Owner - Bavarian Restoration
    BMW and European Electronics Repair and Restoration
    www.BavRest.com
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