I have a 1995 Mercury 150 XR-6 Serial # OG166883, the water impeller was changed on 2/07/2019. I have had the boat in the water well after that date
and hadn't had it in the water since. So, yesterday I hooked up the water muffs and cranked up the water and started the engine. Everything is fine but while waiting for the water to come out of the "pee hole" (for lack of a better term), the overheating alarm went off. I did shut it off and waited for the engine to cool. I was thinking
it could possibly be the thermostats. I pulled them both and found one did not open while the other did. So the question is, impeller or thermostat problem? The last time
I was at the lake it performed with no issues....Thanks for any replies in advance.
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