Non Op Fan on '84 Interstate


Information and questions on GL1200 Goldwings (1984-1987)
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warmblood58
Posts: 37
Joined: Sun Aug 24, 2014 12:58 am
Location: San Francisco, California
Motorcycle: 1984 Goldwing Interstate

Non Op Fan on '84 Interstate

Postby warmblood58 » Mon Dec 29, 2014 10:07 pm



Non -Op fan - clean fan switch? Can anyone direct/lead me through some steps to get fan operable? Thanks!



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WingAdmin
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Motorcycle: 2000 GL1500 SE
1982 GL1100A Aspencade (sold)
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1998 XV250 Virago (sold)
2007 Aspen Sentry Trailer

Re: Non Op Fan on '84 Interstate

Postby WingAdmin » Fri Jan 02, 2015 2:34 pm

The fan has 12 volts at all time when the bike is switched on, and the fan temp switch connects the ground to the engine case when the temperature gets high enough. This completes the circuit and allows the fan to run. Try removing the wire from the temp switch and connecting it to ground (pressing it against the engine case will work). If the fan runs, then the problem is with the temp switch. If not, then the problem is elsewhere - more likely the fan itself. I assume you've checked fuses already?

warmblood58
Posts: 37
Joined: Sun Aug 24, 2014 12:58 am
Location: San Francisco, California
Motorcycle: 1984 Goldwing Interstate

Re: Non Op Fan on '84 Interstate

Postby warmblood58 » Fri Jan 02, 2015 10:23 pm

Thanks, getting back to it again tomorrow after being away for a few days. I will recheck fuses BUT, is there a fusible link or remote fuse for fan or is it located in fuse block on top of air cleaner. Contacts may just be bad as bike has sat for a few years. Thanks again!

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alwims
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Location: Wheatland, Mo, but living in Edinburg, Texas
Motorcycle: 1987 GL1200 Aspencade
2008 GL1800

Re: Non Op Fan on '84 Interstate

Postby alwims » Fri Jan 02, 2015 11:12 pm

WingAdmin wrote:The fan has 12 volts at all time when the bike is switched on, and the fan temp switch connects the ground to the engine case when the temperature gets high enough. This completes the circuit and allows the fan to run. Try removing the wire from the temp switch and connecting it to ground (pressing it against the engine case will work). If the fan runs, then the problem is with the temp switch. If not, then the problem is elsewhere - more likely the fan itself. I assume you've checked fuses already?


I would never question you on anything electrical, but on my 87 GL1200 I replaced the fan switch twice and decided there wouldn't be a 3rd. I discovered on my bike that the wires going to the switch were both hot when the switch was activated so I put an on/off manual switch in place of the auto fan switch and it works perfect. I mounted it on my handlebars. I turn it on when I get 4/5 bars on the gauge. Actually, I left the plug on the switch and tapped into each wire with the manual switch.

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WingAdmin
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Posts: 17046
Joined: Fri Oct 03, 2008 4:16 pm
Location: Strongsville, OH
Motorcycle: 2000 GL1500 SE
1982 GL1100A Aspencade (sold)
1989 PC800 (wife's!)
1998 XV250 Virago (sold)
2007 Aspen Sentry Trailer

Re: Non Op Fan on '84 Interstate

Postby WingAdmin » Mon Jan 05, 2015 4:41 pm

I'm looking at the schematic for the GL1200, and there is a 10 amp inline fuse in between the keyswitch and the fan. If you are not seeing +12 volts on the black/blue wire at the fan, then check that 10 amp fuse. If you have 12 volts at the fan on the black/blue wire, then follow the black wire to the thermo switch, then ground that black wire. If the fan turns on, then your thermo switch is likely at fault.

warmblood58
Posts: 37
Joined: Sun Aug 24, 2014 12:58 am
Location: San Francisco, California
Motorcycle: 1984 Goldwing Interstate

Re: Non Op Fan on '84 Interstate

Postby warmblood58 » Mon Jan 05, 2015 4:50 pm

Thanks, bike has just been restarted after sitting a few years and fan kicked in the other day so it sounds like cleaning ground/contacts would be a worthwhile endeavor -thanks again




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