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AWD - 1995 850 Tach

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1995 850 Tach 850

Anyone else ever have a tach that worked intermittently, went out, then all of a sudden started working perfectly again? The thing has been out for a year or two, but I recently had a couple of 300 mile days in a row. It kicked back in on the first day, went out again, and since the second day it's been perfect. I don't know if or why sustained open highway miles would make a difference, but it's interesting.
--
'64 PVMoneypit, '95 850





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    1995 850 Tach 850

    This won't explain your suddenly working tach but in the early '70's while living in the Catskills I bought a 1949 Chevy farm pick-up. The speedo didn't work but that didn't matter with my $50 truck purchase and a top speed of 45 mph. Miracle of miracles it began to work a year later when we moved to Buffalo. Had to make the 300 mile trip on all country roads - took two days--made me feel like pioneer in a Conestoga Wagon! There are some things you just shouldn't question. :-) -- Dave





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      1995 850 Tach 850

      Spoke too soon. It's back to being touchy again. Although working more frequently than it did. I'll see about checking that connection from the cam position sensor. I have heard that the ABS system can mess with it, too, but I don't know that for sure.
      In the event that the tach itself needs replacing, is it fairly easy to do? I know that getting the cluster out isn't a big deal, but not sure about replacing the actual gauges individually. The clock drifts pretty severely, too, so I'm thinking about picking up a cluster from a junkyard and swapping out both the clock and the tach. Thoughts?
      --
      '64 PVMoneypit, '95 850; R.I.P. '78 244, '81 244, '83 244, '84 244, '93 945 Turbo





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        1995 850 Tach 850

        If the clock also messes up, then it is an electrical connection. Not the component. If a prior owner had repaired the odometer, a wire may be pinched or a connector may be loose.

        If you have a turbo, watch out for the vacuum line to the gauge.

        --
        Keeping it running is better than buying new





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    1995 850 Tach 850

    Cob webs? Bad connection under the hood from the cam position sensor?
    --
    Keeping it running is better than buying new





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