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post #1 of 20 (permalink) Old 05-12-2018, 02:32 PM Thread Starter
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fans not working

Hi all, during a ride out my bike got hot but the fans never kicked in, they were working the last time I rode so I'm a bit lost. The temp gauge is fine as I got some speed and cool air going it showed that temp had dropped. All suggestions are grateful.
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post #2 of 20 (permalink) Old 05-12-2018, 02:41 PM
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Hi all, during a ride out my bike got hot but the fans never kicked in, they were working the last time I rode so I'm a bit lost. The temp gauge is fine as I got some speed and cool air going it showed that temp had dropped. All suggestions are grateful.
Either the relay has gone pop or you have a small stone stuck under the fan blade like I did last time I rode thru wales....
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post #3 of 20 (permalink) Old 05-12-2018, 02:45 PM
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I'm with Adam on the relay....

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post #4 of 20 (permalink) Old 05-13-2018, 12:20 AM
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Check the fan fuse first,then relay.You can check if the fans themselves are working by grounding the black/white wire at the relay with ignition switch on.
If the fans come on,you need a new relay.
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post #5 of 20 (permalink) Old 05-13-2018, 08:37 AM
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I don't even have fans...

What a beast of a motorcycle!
It growls and rages and flies across the tarmac like a wild animal that has escaped the confinement of a cage and after merely waiting restlessly until the release, will not endure being locked up ever again.


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post #6 of 20 (permalink) Old 05-13-2018, 10:04 AM
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Don't forget there are 2 temp sensors......one for the meter and one for the ECU/fans.

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post #7 of 20 (permalink) Old 05-13-2018, 01:44 PM
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Don't forget there are 2 temp sensors......one for the meter and one for the ECU/fans.

Ed's got a good point here And, I forgot that fact when we were talking about it, it could still be the ECU thermostat as well....

What we've got here, is failure to communicate.


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post #8 of 20 (permalink) Old 05-13-2018, 06:03 PM Thread Starter
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Now i'm completely lost, it definitely isn't the fuse as I checked that today, my problem now is where is the relay located as it's not in the manual and do I have to take off the tank and airbox to fix this?
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post #9 of 20 (permalink) Old 05-13-2018, 06:23 PM
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Not sure what model you have,but the relay is normally right next to the fuses on the R/H side where your knee is positioned when sitting on the bike.Number 47 in this picture-

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post #10 of 20 (permalink) Old 05-14-2018, 01:13 AM Thread Starter
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Not sure what model you have,but the relay is normally right next to the fuses on the R/H side where your knee is positioned when sitting on the bike.Number 47 in this picture-

Attachment 440114
Thanks Mitch, I will look later and get back.The bike is a 2002 f4 1+1 750.
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