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2001 Polaris Magnum 4 x 4 Mossy Oak
The oil cooilng fan will not come on unless I unplug the thermistor from the cooling tank, or unless the oil temperature light comes on and the motor over heats. I have been tracing this down to long and driving me crazy. I need to know what the specs are for the thermistor switch to engage. I already replaced the thermistor switch and get the same results. Having a hard time finding any schematics for this. I get 5 volts through the thermistor and it appears to kick on around 130 and off at 110 (using wifes cooking thermometer). Don't understand why it won't kick the fan on. Any help would be great.

Scott
 

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First welcome to the board!
 
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