i have a john deere 550 k and the transmission temp light flickers on every once and a while . then the other day i started the machine and let it warm for about 5 minutes . and when i went to move it the light would flicker on again when i tryed to up shift past 1.7
Welcome to HEF E ! Serial number? Picture of the light in question? Scroll through the monitor see to if there are codes and post.
there are no codes
Under your floorboard on the left side of the hydrostatic pumps there is a thermostat for the hydrostats with a temperature sensor mounted on top. Make the wiring is not damaged anywhere for that sensor. Are you handy with a digital multimeter? If so back probe the yellow wire and measure the voltage while it is cold and idling (use a small Tee pin to backprobe). Measure again when it starts flickering. Measure temperature of the thermostat as well with a non contact thermometer. You could also measure ohms across that sensor when cold (key off). Let me know the reading and approximate temperature when you take it (non contact thermometer would be handy here again). Then connect it and run it until it starts flickering, shut it off and measure ohms and temperature again.
thank you very much !!! i will check tomorrow after work when i go out to my farm . thanks again !!