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Hopefully im posting in the right forum. So my 04 cbr 600rr just started getting really hot and i noticed the fan wasnt kicking in, temperatures got up to 240, so i turn off the bike, let it cool down, and then after 20 minutes i turned it on and fan was on at all times even at low temperatures. Anyone knows what it could be? Fan either turns on and stays on at all temperatures or doesnt turn on at all. I changed my coolant and still have the problem
 

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There is a temp sensor that sends a changing resistance to the ECU, and it determines when the fan runs.
 

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I would try and get the relay replaced... Specially if it is an intermitent problem...

You thermostat would fail all the time if it was faulty/broken
 
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