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Discussion Starter · #1 ·
Hello, im from the philippines, my bike is a duke 390 2014, having issues with the rad fan, sometimes i get the high coolant temp warning when stuck in traffic, goes back to normal when moving, the rad fan is working but i never hear it, not like the other dukes where you can easily hear the fan, tried connecting the fan directly to a battery and thats when i hear the fan, tried cleaning the connectors but its still spinning slow, hope you guys can help me out, thanks!
 

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Try another fan first and check the negative connections to the frame/battery.
 

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Discussion Starter · #3 ·
Will try to get another fan if possible, will try to check the negative connections first. Can the relay be a problem?
 
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