oil cooler

I have a 2000 sportsman 335 that overheats and shuts down, when cooled starts back up. I have ohmed the thermistor and it is bad, this part has been discontinued. I jumped orange/black wire to ground, fan runs with ignition on. I have discovered the thermo valve is not working and oil is...

Newbie here. First time so be gentle. Oil cooler fan and light is on all the time. Checked thermistor and it has unusually high readings>264k ohms at 70 degrees. Service manual states over 50K shows open. Trying to find replacement 4010934 and Polaris has discontinued it. They recommend a...