If Your Engine Overheats; If Your Engine Overheats - Honda Goldwing GL1800/A Owner's Manual

If Your Engine Overheats

Normally, the needle on your temperature gauge will rise to a point about
midway between C (cold) and H (hot) and then level off. Hot weather may
cause the needle to rise higher than normal. So will temporary stress such
as climbing a hill. If you're stuck in stop-and-go traffic, the needle may
climb some, but the radiator fan is designed to prevent overheating. Be
aware of these variations as you monitor the gauge.
If the needle moves toward H for no apparent reason, pull safely to the side of
the road. If possible, park in a shady area.
Continuing to ride with an overheated engine can cause serious engine damage.
A steaming engine indicates a coolant leak. Shut the engine off and wait until
the steaming stops. Look for a leak, but don't touch the engine or radiator
system. Let everything cool off first.
If there's no obvious problem, leave the engine on so the fan and coolant
circulating system can continue working. Monitor the temperature gauge. The
needle may drop to the normal range after a brief stop with no load on the
engine.
Check the radiator fan.
If the fan is not working, turn the engine off. Open the fuse box (page
and check the radiator fan fuse. If the fuse is blown, replace it with the proper
(same rating) spare fuse. Start the engine. If the needle climbs to the red zone
and stays there, turn the engine off.
If the radiator fan is working, visually check the coolant level in the reserve
tank, located behind the left engine side cover. It isn't necessary to touch the
radiator system.
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