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Vdo tachs

Old 06-07-2019, 01:13 PM
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Default Vdo tachs

I have vdo vision tachs on my twin Cummins and one side reads fine and the other works fine until 2200 rpm and the stops. Think they're set up correctly, and I'm leaning towards it being faulty but who really knows, VDO is tough to get ahold of.
Old 06-07-2019, 06:42 PM
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Do the 2 VDo tachs have the same dip switch settings?

https://www.vdo-gauges.com/media/ins...0Diameter).pdf

Do the exhausts sound well- synchronized at the same indicated rpm levels up to that 2200? ( there is a calibration adjustment on the side of th tachs according to that instruction link.)

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