2016 FLTRU Twin Cooling Fan Operation
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Cruiser
Joined: Jan 2010
Posts: 199
Likes: 118
From: Pocono Mountains
2016 FLTRU Twin Cooling Fan Operation
Recently had my water pump replaced with the upgraded style pump. Have noticed since that both fans don't com on simultaneously, they run independent of one another. I never noticed this prior to the pump replacement, I always remember them coming on together.
Thanks!
Thanks!
Seasoned HDF Member
Joined: Oct 2012
Posts: 11,210
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From: St.Louis Mo.
This is the way my fans operate too. If one of his is running and the other is not something must have been changed in the ECM.
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Cruiser
Joined: Jan 2010
Posts: 199
Likes: 118
From: Pocono Mountains
Took it back to the shop that replaced the pump, who I trust, said they can run independently. All controlled by the ECM. Maybe the upgraded pump causes them to operate a little differently than with the original pump.
I have the upgraded pump and did a lot of over-research (as usual) when I went to replace it. I've heard of the fans coming on slightly apart from each other, but the system design doesn't seem to warrant separate control. With the ignition only on, twist the throttle half way and hold it until the cooling system check starts. If both fans don't come on right away, I'd bet you're due one more visit to the installer.
Stellar HDF Member
Joined: Oct 2005
Posts: 2,264
Likes: 935
From: Clearwater, Fl
Originally Posted by Ultra103
I have the upgraded pump and did a lot of over-research (as usual) when I went to replace it. I've heard of the fans coming on slightly apart from each other, but the system design doesn't seem to warrant separate control. With the ignition only on, twist the throttle half way and hold it until the cooling system check starts. If both fans don't come on right away, I'd bet you're due one more visit to the installer.
Stellar HDF Member
Joined: Sep 2007
Posts: 2,452
Likes: 666
From: Vancouver Island B.C.
If it's been tuned at Doc;s it has been done with a TTS. It turns one fan on first then the second, one of the things the TTS does differently.
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Road Captain
Joined: Sep 2014
Posts: 718
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From: IL
My '22 FLTRK, I have noticed 2 times now, the left fan on only. When I got back home, I did the cooling system test. Both fans worked fine. Did the test a few times so far and both fans work fine. Most of the time when I hear my fans on now I check and both are on. So seems that the left fan can run by itself for some reason.
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