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Odd speedometer problem - continuously bouncing from minimum to maximum

bcage

Active Member
Messages
6
Reaction score
2
Points
42
Boat Make
Yamaha
Year
2014
Boat Model
AR
Boat Length
24
On my last trip out, a new problem surfaced on my 2014 AR240. The speedometer began bouncing from full counter clockwise to full clockwise - non stop. This is the typical behavior for the speedometer (as well as the tachometers) when the engine is being started except that it usually does a single cycle and then settles into the appropriate reading (current mph or rpms for the tachs). Right now, the speedometer goes through the cycle continuously; never stops; never shows the actual speed being traveled.

Any insight into this? I found one other posting for the same issue from a couple of years ago, but there were only a couple of posts and no answer. My first inclination is that it might be a short, but I don't know.

Hopefully someone can point me in the right direction to chase this down. Thanks ahead of time.
 
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