2002 Mercury 2 stroke over hate alarm

windsurfer2003

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Jul 31, 2016
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I have a 2002 Mercury 90 two stroke. The over heat alarm is going off. I'm not mechanical myself. Goes off after running hard for about 20 minutes. Shuts off instantly when put in neutral. It is NOT running hot. Had the temp checked. Peeing fine, had sensor replaced, doing the same thing. I know it has two different alarms, one oil, one water. Disconnected the oil side just to eliminate that, so its on the water side. Any ideas? Thanks
 
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