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post #1 of 15 (permalink) Old 11-28-2016, 07:36 AM Thread Starter
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Overheating gl 1800

Hello everyone. I am from Argentina, I have a Gold Wing 1800, 2004 eight years ago and about two years ago I started with low speed overheating (20 miles). I changed the two radiators and fans (I put of 2006, bigger) the ECT sensor, water pump, thermostat and ECM, the operation of the fans as of factory. It improved a lot, in parade the temperature stays normal (in the middle of the marker) but climbing a hill starts the problem of overheating, it rises until it could reach the red, I do not leave it, I must stop and wait for it to turn the temperature. One query and one question: what else could be related to the fault, could be the IAC sensor? Six years no problem and then started this. That is my doubt please any suggestions will be welcome. Thank you very much.
Sorry for my English....

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post #2 of 15 (permalink) Old 11-28-2016, 08:58 AM
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"reach the red" is not overheating .
If the water boils it is overheating .

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post #3 of 15 (permalink) Old 11-28-2016, 08:59 AM
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Did you reverse the fans? The problem I find is when going between 15 & 20 mph with the fans running causes the temperature to go up. At below 15 the fans can force air through the radiators against the flow and above 20 the fans turn off so normal flow will do the job, it is just in that 15 to 20 range where a problem exists. Since I have not encountered this but 2 times I can remember I don't worry about it but if I did this sort of riding regularly I would reverse the fan direction.

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post #4 of 15 (permalink) Old 11-28-2016, 09:45 AM
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What DaveO430 just said.

I also note you said "reach the red", and that is NOT overheating.
It is just approaching the point where the fans should turn on and pull the temperature back down.

But, if in a parade as Dave mentions, between 15-20 mph, the fans as OEM installed, blow forwards against the incoming air... the result is a stagnant "dear air" space and overheating can actually occur.

What you need to do, if you have not already, is:

.... Reverse the power leads to the Fan motors so they will blow towards the rear of the bike.


.... Reverse the Impellers on the Fan motors so that the curvature is again properly positioned to PUSH AIR. If you don't they will not be as efficient as they should be.

You might wish to just skip the 2nd step IF the reversed polarity to the motors gets the job done.


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post #5 of 15 (permalink) Old 11-28-2016, 09:57 AM
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Quote:
Originally Posted by AZgl1800 View Post

You might wish to just skip the 2nd step IF the reversed polarity to the motors gets the job done.
I think it most likely would work just fine without turning the fan blades over.
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post #6 of 15 (permalink) Old 11-28-2016, 01:05 PM Thread Starter
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Yes I already tried the inversion of the fans before placing the new radiators but it did not work. What I'm going to do is install a manual switch for the fans and I'll try again. I will inform you if cooling improves. It is a complicated fault the overheating of the 1800, especially when the ambient temperature is of 45 ° c (114 ° F) sometimes

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post #7 of 15 (permalink) Old 11-28-2016, 02:17 PM
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holy Cow!!!

That is Phoenix, Arizona temperatures!!!

Very familiar with that, lived and worked there 20 years, and my Goldwings did not have any troubles...... but..... I never rode slower than Warp Speed either


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post #8 of 15 (permalink) Old 12-04-2016, 06:54 PM
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Quote:
Originally Posted by AZgl1800 View Post

I also note you said "reach the red", and that is NOT overheating.
It is just approaching the point where the fans should turn on and pull the temperature back down.
Hi,

I have been reading this thread with interest as I live and ride my GL1800 in a hot country...
I noted the above comment from AZgl1800 which got me thinking...

My temperature guage seems to work fine, I.E. the bike warms up and the guage needle rises and sits pretty much at the half way mark.
If I am in traffic the fans inevitably cut in - no problem, but - the temperature guage never moves from the half way mark...
Is it supposed to as per the comment above?
Do I have an issue with my guage?
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post #9 of 15 (permalink) Old 12-04-2016, 09:20 PM
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Nope, nothing wrong with your gauge....

With my '98SE GL1500, sitting still on the center stand, I let it idle for two hours when I first got it trying to get some Sea Foam into the idle circuits and clear out the varnish from the PO having let it set for two years... "medical reasons"

On that particular bike, running down the road the gauge is about 1/2 way....

Idling it rose up about 3/4 quarter of the way and just stayed there, with the fans cycling.

No two bikes will have the same exact calibration between the sensors and the gauge itself.

That same '98SE though, in downtown Phoenix, Arizona on a 118* day will get right up there almost to the red mark with the fans running..... get out on the highway at 50 mph+ and it drops back to about 3/4 again.

during cooler months, it would run just below the 1/2 way mark.


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post #10 of 15 (permalink) Old 12-04-2016, 09:23 PM
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My current '02 GL1800 is a bit different, it has the well known dead air zone between 10-25 mph....
travel at about 15 mph in a head wind and it will get right up into the red zone... that is because the fans are blowing forwards against the wind... rather a stupid design...

but for me, that is not a worry, I never ride that slow anyway.


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