Mercury 150 overheat Alarm

[longsidelandry]

Originally Posted by Dink

Were you running your motor In boiling g water? If not, then that's not possible......Thermostats open to cool the motor, if they're stuck open then motor would run cold and run fat......

Dude I'm telling you. I had it on the hose and it was cool water where it was going in at the foot but hot as all hell coming out the pisser. Turned off the water, changed the thermostat, turned on the water and it was the same cool temp at the foot and out the pisser.