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Discussion Starter #1
On a 97 Sportsman 500? Their is on in the radiator and one on the engine. What turns the fan on 1st? I know the fan kicked in today but i smelled anti-freeze about that time. I wondered if the radiator sensor is a backup??
 

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the thermo sensor in the radiator is the one that actually turns the fan on...the thermo switch just below the thermostat is concerned with internal engine temp and will signal the ECU to shut down the machine if it gets too hot
 

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Discussion Starter #3
the thermo sensor in the radiator is the one that actually turns the fan on...the thermo switch just below the thermostat is concerned with internal engine temp and will signal the ECU to shut down the machine if it gets too hot

Great! Thanks!!
 
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