Mercruiser Intermittent Tachometer Error

NHGuy

Captain
Joined
May 21, 2009
Messages
3,631
Hi, I tried a search & didn't get a result so here's my question.

My tach intermittently reads too high. This just started this week.
I haven't have a chance to go through and clean up the connections yet.
Snug, clean electrical contacts is my normal course of action on wiring issues.
Have any of you had the same issue, do you have any other repair recommendations for this?
I wonder if it would be any use to exercise the selector switch on the back of the tach?
 
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