1986 381. Has anyone had the problem of water temp gauges reading low? Neither of them quite make it to 140/145. Could it be built up resistance in the sender wire? Wondering if just clipping the old connection and putting on a new one would help. Could the senders just be old and tired?
Is this problem new or has it been this way “forever”? The reason I ask is that new sending units need to be for one meter or dual meter. If you have a single meter sending unit and two meters hooked up to it (one at the helm, one in the engine room), you will get low readings.
Comment 2:
I have a1985 ,381 and that’s what my temperature gauges reads
Comment 3:
If the engines are raw water cooled, the thermostats should be 160 degrees max. If the thermostats have been removed or are stuck open they will run below 160 degrees. Have you verified the actual engine temperature at the manifold?
Comment 4:
After looking things over and reading all the great comments I’m chalking this up to the poor markings on the gauges. Really hard to know what the precise temp actually is.
Comment 5:
a temp gun aimed at the thermostat housing will give you a very accurate reading.
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