1990 SE hot hot hot


Information and questions on GL1500 Goldwings (1988-2000)
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diamond90GW
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1990 SE hot hot hot

Postby diamond90GW » Sun Mar 01, 2015 10:47 pm



Started the GW1500 SE 1990 the other day and noticed the temp climbed past mid range after a few minutes idling. I had added some stabil to the fuel tank and the directions suggested running the engine for 5 minutes after adding the mixture. My question is : should i have a cooling fan switch on at idle to compensate for the heat of idling? If so whats the sequence of checks to determine why it isn't running ? Looking thru the articles on repair in the 1500 section of this forum i saw nothing on a cooling fan for the engine...help!



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Mh434
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Re: 1990 SE hot hot hot

Postby Mh434 » Sun Mar 01, 2015 11:55 pm

If the cooling system is functional, you should be able to idle a GL1500 all day long without overheating.

I'd be checking the following, in this order, to find the issue: a) coolant level; b) fans coming on at or before 1/2 way up the gauge? If not, fan switch has failed/no current to it; c) fans coming on, but still overheating - thermostat failure; d) worst case - water pump failure.

As far as the last one is concerned - have you recently changed coolant? Changing it for standard car antifreeze can cause pump failure, as this stuff contains silicate abrasives that can destroy water pump seals.

The rest aren't big ones to deal with. Start checking & let us know how it goes...

diamond90GW
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Re: 1990 SE hot hot hot

Postby diamond90GW » Mon Mar 02, 2015 7:08 am

so the coolant level cannot affect the fan operation right? My issue is the fan not coming on at idle. In the troubleshooting area I see nothing about checking the fan operation. Like how to remove which panels to access fan assembly? Or even where is the fuse box to check for a possible blown fuse? I understand the fan is only for speeds under 35 mph and at idle , thats the only over heating issue i have according to the temp gauge. At speeds the gauge reads normal, so coolant level and consistency is not the issue, how do i access the fuse area and which panels come off to check the fan motor?Is there an area on this web site to guide me?

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dingdong
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Re: 1990 SE hot hot hot

Postby dingdong » Mon Mar 02, 2015 8:36 am

How far past the 1/2 point? The fans turn on on the 1500 at appx. the 3/4 mark on the gauge. The fans are strictly temperature controlled and will turn on, no matter the speed, if the engine is overheating. Even at highway speeds. I don't think you have a problem unless the needle is getting past the 3/4 mark near the red mark.
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WingAdmin
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Re: 1990 SE hot hot hot

Postby WingAdmin » Mon Mar 02, 2015 10:55 am

dingdong wrote:How far past the 1/2 point? The fans turn on on the 1500 at appx. the 3/4 mark on the gauge. The fans are strictly temperature controlled and will turn on, no matter the speed, if the engine is overheating. Even at highway speeds. I don't think you have a problem unless the needle is getting past the 3/4 mark near the red mark.


Correct. Also, if the coolant level is REALLY low, the thermostatic switch that turns the fans on will not be immersed in coolant, and will never switch the fans on.

First I would check the coolant level. Not just in the overflow tank, but in the radiator filler neck (make sure the engine is COLD first!). If that checks out OK, run the bike and see how hot it gets before the fans come on. If the needle gets near to the red mark, shut it off - but I suspect you just didn't let it get hot enough for the fans to engage.




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