1996 DT150S Overheat buzzer and light problem at low speed and idle.

[N2 Fishing]

Does any one know how to test the sender unit for the trim gauge or test the gauge it self. I have not movement on the trim gauge.

[N2 Fishing]

No one knows?

[Solarman]

N2 in most cases cleaning the connections from the sending unit to the guage itself will let you know what part may be bad. You can take ohm readings beginning at the sending unit with the motor tilted at different positions to verify if you are getting the same readings at the guage. If you get good readings at the guage then possibly the guage is bad (dirty elect contacts internally). You should use the wiring schematic in the manual to inspect connections. Dirty connections are the most common cause.

This site may be closing down soon? Good luck.