Engine Coolant

Information and questions on GL1500 Goldwings (1988-2000)
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Joined: Mon Sep 02, 2013 1:13 pm
Location: largo, fl
Motorcycle: 1994 gl1500 SE

Engine Coolant

Postby thepostman53 » Fri May 23, 2014 8:11 pm

I have a 1994 SE wing and live in Florida. My coolant temp gauge almost pegs out to critical on a hot day, especially when stopped for a period of time. Even on the interstate it doesn't cool down to a normal level. Thought about taking out the thermostat if I could find it, but not sure what the outcome would be. Could someone please advise about how to keep the coolant cool...Bob

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Re: Engine Coolant

Postby HALBUDD » Fri May 23, 2014 9:08 pm

Sounds like you may have a couple of problems, do your fans come on when your setting and its hot? Also you make want to replace your thermostat but dont remove it as it is meant to regulate the coolant.Have you checked to see if your water pump is working? Another thing to check is the radiators them self's as they could be stopped up. If you are running on the expressway and she is not cooling down this would suggest pump not working or thermostat is not opening up.If she is pegging high temperature you really need to get her fixed before any damage is done to the motor. Just my 2 cents-----------------------Hal
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Joined: Mon Sep 02, 2013 1:13 pm
Location: largo, fl
Motorcycle: 1994 gl1500 SE

Re: Engine Coolant

Postby thepostman53 » Sat May 24, 2014 6:05 am

It would seem to me to start with the least expensive like the thermostat, and then the water pump. ..If the fan is working how would I know when going down the road?
Could you tell me where the thermostat and water pump are located? Thank you for your knowledge. ...Bob

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Re: Engine Coolant

Postby dingdong » Sat May 24, 2014 7:11 am

I would start with a coolant system flush. Speaking of coolant have you checked the level? Let the bike idle for a while to check the fan operation. They should come on about the 3/4 mark.

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Re: Engine Coolant

Postby RBGERSON » Sat May 24, 2014 8:37 am

Some say removing the T is not good as it lets water past through the rad's too fast to cool down others say that's bunk..

Advise above correct..coolant level??, fans??, t stat, bad pump, plugged rad, also could be bad temp gauge reading too hot and it's not?????


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Re: Engine Coolant

Postby ct1500 » Sat May 24, 2014 10:05 am

Removal of a thermostat is never advisable on any recent vintage vehicle.

First check is always coolant level and condition. Remove radiator cap when cold fluid level should be visible in neck with coolant also in reserve tank. Test condition by a tester and visually. If in doubt replace. Could be 20 yrs old if not the original owner or was changed on your watch.

This is what I do
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