2005 Honda Shadow overheating?

I put new coolant in it, and it's still overheating. When I ride it, it gets hot, the temp light comes on, then the oil light. I've kept it parked since then, and it has plenty of new oil and coolant. What's the problem?

Could be as simple as the thermostat. Could be running lean as well. I'll move this to the cycles category.

Most likely the thermostat is gone south for the winter.

Check for bent fins on the radiator.
Air rushing through the radiator fins is what keeps the coolant temperature down.

You want a WAG (wild-donkey guess)? Like, the thermostat, dude. Now, how would one check a mechanical device which is supposed to open when it is immersed in a hot liquid?

Air in system, thermosat, waterpump, blown head gasket or temperature sensor. Take your pick.
Did you use the air bleed t omake sure there's no air bubbles in the cooling system? Check manual t osee how & if needed.
For the rest, with engine cold remove radiator cap & start engine. Do bubbles keep appearing in radiator top tank? If so blown head gasket.
From cold, start engine & hold hand on top hose; it should stay cool for several minutes then warm suddenly when thermostat opens. Followed by radiator warming up as flow increases.
If not happening either stat or pump.

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