Crazy tach
My port tach on the fly bridge of my 31' Commander sedan intermittently starts over reading and fluctuating 4-5 hundred rpm's. Sometimes it right on, sometime not. They are the original Faria tachs. After 2000 rpms they always even out within 100 rpms which is normal.
The down station tachs are not affected. (I converted them to electronic years ago). Any thoughts? Dave
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