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    Mercury 150 Outboard Sounds overheat horn

    Engine overheats after running one minute at 3200rpm approx 35mph. this motor is on a 1984 Ranger Bass boat. Runs very good. Replaced water pump, poppet valve(all parts) thermostats, heat sensor. Checked sensor operation. Sensor activates horn aroung 239 degrees. Water pressure stays around 10...
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    1984 Mercury V150 Outboard

    Engine overheats after running one minute at 3200rpm approx 35mph. this motor is on a 1984 Ranger Bass boat. Runs very good. Replaced water pump, poppet valve(all parts) thermostats, heat sensor. Checked sensor operation. Sensor activates horn aroung 239 degrees. Water pressure stays around 10...
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    Mercury V150 overheating

    This is a 1984 XR2. Running at 5000 RPM Horn sounds I idle for a few and it goes off. Get back to 5000 it sounds again within 1 minute. The horn always goes off if I idle. The the sensor was replaced and it still happens. no difference. Took thermostats out and it took longer for horn to sound...
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    What went wrong with 150 XR2

    Have 1984 XR2 150 on a ranger bass boat. When I launch it at the lake it takes too long to get on plane. This happens only at the begining of day Once it gets up, the rest of the day its better. It has a small delay but its better. The boat used to get up right away. Prop is good. Engine has no...
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