Rev Counter and MPG gauge problems. SI board and fuses good.

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  • 337
    Noobie
    • Sep 2006
    • 14
    #1

    Rev Counter and MPG gauge problems. SI board and fuses good.

    Hi, I've done a lot of reading to see why my rev counter and MPG gauge isn't working.

    -SI batteries are good
    -I've changed fuses # 10, 19 & 21 (They weren't blown)

    Any other leads as to what to check next?

    Thanks,
    Tags: None
    • whiltebeitel
      R3VLimited
      • Apr 2007
      • 2098
      #2
      re-flow the connections on the board?
      '89 325i track sloot
      '01 530i daily

      -Enginerd

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        • jlevie
          R3V OG
          • Nov 2006
          • 13530
          #3
          The next things to try would be a different tach, SI board, and DME. The easiest diagnostic would be to temporarily swap in a cluster that is known to work properly. If that fixes the problem the cause will be the SI board or tach. If it doesn't the DME is cause.
          The car makes it possible, but the driver makes it happen.
          Jim Levie, Huntsville, AL

            Comment

            • 337
              Noobie
              • Sep 2006
              • 14
              #4
              Thanks for the help!

              The DME is an other name for the ECU?

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