K11 Owners Group

ghall77 · Posted: Sat Mar 15, 2008 9:27 am Post subject: Overheating K1100RS

Can anyone help!
My R1100RS is overheating after just 2 miles, one day it was fine, the next the gauge climed up to red. I've replaced the thermostat & coolant but with no luck. I think it may be either the temperature sensor or a failed fan. Does anyone know at what stage the fan should kick in? When the temp gauge is on the red mark I still can't see the fan working. What's the best way of testing both the temperature sensor and fan without dismantling.

Cheers
Ghall77

Adrian · Posted: Sat Mar 15, 2008 2:52 pm Post subject:

There must be a way to short the fan to see if you can get it to spin manually. Someone here maybe able to help locate where it connects to the main loom. Alternative, with the same connection is to see if there's continuity through the fan - can you complete a circuit through it.

With my KLT the fan usually kicks in when the needle is one 'segment' past the halfway mark - if that makes sense. It hits this a lot even in winter when I ride to work, sitting in city traffic for more than a few minutes will send the temp up.

Good luck with it.

Adrian
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Adrian in Somerset, UK
K1100LT SE
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bmwmick · Posted: Sat Mar 15, 2008 5:35 pm Post subject:

I didn't know the R1100RS came with a fan.

IF, however it is a K-Bike, you can run a diagnostic in the Motronic to test the fan and the fan relay.
http://k11og.org/forum/viewtopic.php?t=2110

Mick
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Mick McKinnon
KOG#175
'93 K1100LT, '96 R1100RT, '84 R100RS, 2010 Kawasaki C-14
Tucson, AZ

Flying Duck · Posted: Sat Mar 15, 2008 6:30 pm Post subject:

Also note that it could be your temp gauge or it's sensor - which is different from the temp sensor which drives the Motronic.

Does the overheat light ocme on in the cluster?
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FinnRS · Joined: 01 Dec 2007 Posts: 5 Location: Finland

Kipp K11RS · Joined: 23 Feb 2006 Posts: 17 Location: Honeoye Falls, NY

While there may an issue with fan or relay.

I don't think that is your problem. Normally unless you are riding in extremely hot temps, 2 miles is too short to get hot enough to cause my fan to come on. My guess would be your coolant is not circulating....or you are really low on oil.
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Kipp
'94 K1100RS
Honeoye Falls, NY

drmalacarne · Posted: Sun Mar 16, 2008 9:35 pm Post subject:

IN my KLT, the fan enters when the gauge is almost over the red line.
Last time I put the Motul MoCOOL Radiator Fluid pure in the system, and the engine runs with lower temperatures, it seems.
And here the temperatures reach almost 95°F!
Guilherme.
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1994 K1100LT SE n° 0267
1998 HD Heritage Springer 95th anniversary
Yes, a Hog and a Beemer can live together!

ghall77 · Posted: Tue Mar 18, 2008 10:03 am Post subject:

Thanks all for your input, it turned out to be a faulty temperature sensor linked to the temperature gauge.

ghall77
Northumberland, England.