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post #1 of 6 Old Jan 3rd, 2019, 4:49 pm Thread Starter
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cooling fan

I noticed my temp gauge was between 1/2 and 3/4 while idling and the cooling fan didnt come on yet so I shut it off.Can someone tell me what temp it should come on or is there away to test it?
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post #2 of 6 Old Jan 3rd, 2019, 5:01 pm
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Re: cooling fan

The fans will not come on until the gauge gets near or in the red. At least that is what mine does. There is a temperature which I'm not sure of (others will share I'm sure).

No need to worry if they come on. BUT worry if the red light on the dash comes on!

You're safe to ride.

And you could do a search on this site for loads more information about the fans/cooling

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post #3 of 6 Old Jan 3rd, 2019, 8:27 pm
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Re: cooling fan

Yes the thermostat opens at 185 F, Cooling fans kick in at 221 F and the warning light comes on at 239 F.

Now on the 99-2004 the fans kick in just before the red, on the 05 they kick in around 5/8 to 3/4 full scale on the LCD. If you want to test your fans disconnect the cylinder head sensor, the fans should run with it undone. Sensor is at the back of the head (#3) and the connector (2 pin, #4) is behind the battery cover tupperware.
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Last edited by jzeiler; Jan 4th, 2019 at 3:25 pm.
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post #4 of 6 Old Jan 4th, 2019, 10:01 am
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Re: cooling fan

I guess I was a sorry a$$........I just cranked mine up and waited to see if it came on...and when. Pretty much dead on Jzeiler.........
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post #5 of 6 Old Jan 4th, 2019, 12:57 pm
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Re: cooling fan

Quote:
Originally Posted by jzeiler View Post
Yes the thermostat opens at 185 F, Cooling fans kick in at 221 F and the warning light comes on at 239 F.

Now on the 99-2004 the fans kick in just before the red, on the 05 they kick in around 5/8 full scale on the LCD. If you want to test your fans disconnect the cylinder head sensor, the fans should run with it undone. Sensor is at the back of the head (#3) and the connector (2 pin, #4) is behind the battery cover tupperware.
My 07 fans come on about 3/4 of full scale. Almost exactly halfway between the midpoint tick and full scale. Never had it hot enough to see a warning light, unlike the K1600 where I have seen the warning light on both units I have rented.

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post #6 of 6 Old Jan 5th, 2019, 8:43 am Thread Starter
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Re: cooling fan

2000 BMW K1200LT.thank you.puts my mind at ease.

Last edited by Wingnut789; Jan 5th, 2019 at 9:06 am.
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