1988 GL1500 Thermostatic Fan Switch question


Information and questions on GL1500 Goldwings (1988-2000)
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Aussie81Interstate
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1988 GL1500

1988 GL1500 Thermostatic Fan Switch question

Postby Aussie81Interstate » Thu Jan 14, 2016 3:45 am



Hi guys,

I have purchased a thermo fan switch to replace mine which has continuity when the bike is stone cold - forcing the fans to remain on constantly. I have disconnected the power wire temporarily to stop this as only doing short runs and bike not even coming up to temperature with my ride to work or home.

I purchased a new thermo switch one from ebay with an open temperature of 85 but appear to have been supplied with one which is stamped - ON 80, which I presume is starting to open at 80 celsius. What effect would this have on the bike - would it mean the fans come on a lot earlier or would this still be acceptable - I know the thermostat probably starts to open at 82-83 celsius - then pushing the coolant through the radiators when it gets back to the bottom left where the thermo sensor is - if the temp is 80 or above would the fans come on? I am tempted to request another sensor that is the 85 one that was advertised - but really want to install the switch as will be going on a longer run shortly, and want the bike to be ready.

Any thoughts ?

thanks

Charlie



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Re: 1988 GL1500 Thermostatic Fan Switch question

Postby WingAdmin » Thu Jan 14, 2016 10:21 am

The OEM switch closes at 98-102° C (208-216° F).

The coolant thermostat starts to open at 80-84° C (176-183° F) and is full open at 93 - 97° C (199-206° F)

If in fact the switch you have closes at 80° C, you're probably going to end up with your fans running as soon as the bike warms up, and pretty much continuously after that.

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Aussie81Interstate
Posts: 684
Joined: Thu Nov 27, 2014 2:34 am
Location: Penrith Australia
Motorcycle: 1982 CX500 Turbo (restoration project)
1981 GL1100 Interstate (sold)
1988 GL1500

Re: 1988 GL1500 Thermostatic Fan Switch question

Postby Aussie81Interstate » Thu Jan 14, 2016 4:02 pm

The ebay seller has offered to replace the switch - so that is fine.

I might test the switch delivered to see at what temperature the switch closes or starts to close, and do the same for the new switch when it arrives.

Thanks for the response - much appreciated.


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