GL1500 thermostat change - Page 3 - Steve Saunders Goldwing Forums

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post #21 of 48 (permalink) Old 04-25-2017, 08:35 PM
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Originally Posted by Ekvh1 View Post
I was surprised at how quickly the fan came on without the thermostat in there.
I think, there is a misinterpretation here. Without a thermostat the coolant will circulate freely and continuously, which will delay the temperature increase.
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post #22 of 48 (permalink) Old 04-26-2017, 06:35 AM
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No misinterpretation, I was just commenting that it still comes on. I didn't say it came on sooner. At roughly 45 degrees out, I didn't expect it to come on for a long time. Like I also mentioned it's been too cold to ride it far since doing this. I could still have another issue. (Head gasket just done with copper, could be leaking)
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post #23 of 48 (permalink) Old 04-26-2017, 10:09 AM
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Originally Posted by Ekvh1 View Post
No misinterpretation, I was just commenting that it still comes on. I didn't say it came on sooner. At roughly 45 degrees out, I didn't expect it to come on for a long time. Like I also mentioned it's been too cold to ride it far since doing this. I could still have another issue. (Head gasket just done with copper, could be leaking)
Ok, it is more clear now.
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post #24 of 48 (permalink) Old 05-04-2017, 09:10 PM Thread Starter
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Then there is nothing wrong with your thermostat, you have a problem with the gauge.
The thermostat is currently stuck open. Coolant is constantly flowing, both cold and hot. I can see this movement while looking into the right radiator with the cap off.

Blocking the radiator front inlet and running the motor until the fans turn on is at the usual place on the gauge. When I first got this bike I took note where the fans turned on, on the gauge, that has not changed.

I do not lose coolant therefore no leaks.


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post #25 of 48 (permalink) Old 05-05-2017, 03:50 AM
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where on the gauge do the fans come on? about 3/4 or more like 9/10
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post #26 of 48 (permalink) Old 09-12-2017, 07:56 PM Thread Starter
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where on the gauge do the fans come on? about 3/4 or more like 9/10
Sorry it took so long to get back, I forgot about this thread.
Picture tells the story of my temperature needle.

Which is most desirable to change the thermostat?
Removing the radiators or carburetors?
There is room to maneuver with just the 2 fans removed. Question is, if there is a broken bolt can that issue still be accessed?
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post #27 of 48 (permalink) Old 09-12-2017, 08:08 PM
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All three lines are well within the normal range. If that is as bad as it gets I would not worry.

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post #28 of 48 (permalink) Old 09-12-2017, 09:57 PM
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I agree, my 1500 runs hotter than that indicated before the fans kick on,
still fairly high indication when they turn off too
Normal cruising temp anywhere in the main 2/3 is correct.
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post #29 of 48 (permalink) Old 09-13-2017, 04:53 AM
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Originally Posted by wing-man View Post
The thermostat is currently stuck open. Coolant is constantly flowing, both cold and hot. I can see this movement while looking into the right radiator with the cap off.
Blocking the radiator front inlet and running the motor until the fans turn on is at the usual place on the gauge. When I first got this bike I took note where the fans turned on, on the gauge, that has not changed.
I do not lose coolant therefore no leaks.
You should not be able to see the inside core of the radiator from up top, coolant needs to be filled to top of neck. Depending on your year of model coolant is always circulating in the right radiator. Thermostat opening temp is a little bit above the left hash mark.

With both fans out thermostat can be gotten to.

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post #30 of 48 (permalink) Old 09-13-2017, 06:47 PM
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If you are sure there is a difference from where it used to run keep in mind it might just be a change in the range of the meter itself. I see nothing to worry about right now.

Mike

Worked on the "big rigs" for 45 years now just riding my Wing whenever I can. Gets cold in Wisconsin.
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