Hi All, I'm new to the forum. I'm sure this topic has been covered many times, but I'm totally stumped by my problem. I have a 1989 Johnson 60hp J60tlcea VRO outboard. It has been an awesome motor for the last 10 years. I put in a new water pump and thermostat just this past spring. Now I blow the overheat alarm and it dumps me down to S.L.O.W. mode every time I'm at wide open throttle for more than a couple minutes. The tell tale is strong and luke warm. My temp gun reads 150 - 170 on the cylinder heads and mid 140s on the thermostat housing. I've dropped the lower unit and have checked the water pump and checked the thermostat in boiling water to make sure it opens. I changed the temp. sensor near the thermostat and it still does it. If I unplug the temp. sensor the alarm stops. I don't know what normal operating temp should be. Any help would be greatly appreciated...
