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RPM Gauge not working


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Put the boat boat in the water today and the RPM gauge is not working and it is causing the alarm to beep. The digital one works just fine. It didn't start until I got up to about 3000RPM's. Once it started it didn't stop until I turned the boat off. Started it again, not on, until 3000RPM's. Any ideas? Thanks.

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How was your oil pressure and engine temp?

oil pres. was 80 and engine temp was 160. all other gauges looked good. the rpm gauge is stuck at 1100.

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mine quite working --pulled the dash off ,and one of the pinns in the main connector was out so i put it in and works great

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mine quite working --pulled the dash off ,and one of the pinns in the main connector was out so i put it in and works great

did the alarm beep when yours stopped working? also not sure if it is related, but the battery has a low charge. not sure if its important just throwing it out.

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IIRC, some have talked about a switch on the back that is numbered 4,6,8. Twist that back an forth a few times and reset to 8. May not be the problem, but worth a shot.

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Cannon plug? Does that motor have one? I would guess that the tach signal passes through that plug if you have one. It would be a very low voltage signal (lower than 12 volts), and these signal been having problems going though that plug with the silicon grease and loose connections in that plug.

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