GL1800 cooling fan wiring modification kit


Information and questions on GL1800 Goldwings (2001-2017)
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AZgl1800
Posts: 1772
Joined: Thu Oct 30, 2008 2:46 pm
Location: Lake Oologah Indian Territory USA
Motorcycle: '02 GL1800

Re: GL1800 cooling fan wiring modification kit

Post by AZgl1800 » Sun Aug 11, 2019 12:46 pm



Belly pans will not effect the engine.
the engines are Water Cooled.

they need air flow thru the radiator and if that is restricted, then the engine will get hot.

I can't imagine, that the only exhaust air flow from the radiator would be through the bottom of the frame.


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Techdude2000
Posts: 183
Joined: Mon Jun 13, 2011 10:11 pm
Location: Lexington, KY
Motorcycle: 2004 GL1800

Re: GL1800 cooling fan wiring modification kit

Post by Techdude2000 » Sun Aug 11, 2019 2:19 pm

Yea, it’s not the belly pan, there’s thousands of 1800s on the road with no heating problems. Since everything replaceable has been replaced, there’s something else causing this. Air flow restriction through the radiators or plugged passages in the radiators or heads would be my guess. A normally running 1800 will not get hotter on the highway.

RThill4355
Posts: 12
Joined: Tue Sep 05, 2017 9:30 pm
Location: Frankenmuth, Mi
Motorcycle: 1984 GL1200A

Re: GL1800 cooling fan wiring modification kit

Post by RThill4355 » Sun Aug 11, 2019 3:51 pm

The only thing not done was a flow test on radiators, they were cleaned with a cleaning kit and the flow seemed to be ok per tech, I just wasn't going to put any more $$$$ into it so I sold it to a chapter member who was aware of the cooling problems. Going to Wing Ding and stopping on the side of the road did not appeal to me. Thanks for all help on this site.

RThill4355
Posts: 12
Joined: Tue Sep 05, 2017 9:30 pm
Location: Frankenmuth, Mi
Motorcycle: 1984 GL1200A

Re: GL1800 cooling fan wiring modification kit

Post by RThill4355 » Mon Aug 12, 2019 6:26 am

A bit more information on overheating problem. I stated on my last ride on "03 that the engine area was uncomfortably hot, I mentioned belly pan, and yes I know bike is water cooled, but air flow to and around oil pan is severely restricted so much that the oil was extremely hot and had no cooling air flow to the fins on the oil pan so the oil was hotter than normal, causing the engine to run extremely hot adding to the heat that the radiators are supposed to dissipate could not. Talked with new owner this weekend and he said temp gauge needle would fluctuate when shifting thru traffic, but not sitting, and he only runs up to 60 mph and no problem to him, and he is not taking belly pan off as he loads trike into a toy hauler.



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