Quick question. We had the temp alarm
sound on our port engine
the other day after a very short period of motoring. My first thought was raw water
flow restriction. Raw water
not restricted at all. Second thought fresh water
side flow or thermostat failure. Flushed the entire system removed heat exchanger
stack and all passages clear no restrictions. Tested thermostat in hot water
and it opens at 85-90 C.
I put the system back together and started the engine
and had an immediate temp alarm
suggesting the sensor has failed. I removed the plug
on the thermo monitor
ďitem 6 on the diagram below and the alarm quits of course.Ē Above that thermo monitor
is a temp sensor. Can anyone confirm the function of these two parts
? It is my belief that the temp sensor item 4 will shut down the engine if it gets too hot, and the monitor triggers the alarm at the helm
. Do I have it right?