Check your fuses. The fan's fuse may have blown. If the fuse is blown and replaced, then blows again, take it in to have someone look at it because the fuse is blowing to protect your car's electrical system from an over-current situation that could become more dangerous.
(Hint: gasoline + oxygen + spark = fire; good for combustion inside the engine, bad for cars and people outside of the engine).
Seriously, don't ignore bad electrical systems... They may not return the favor.
Get a Bigger Radiator
Thermostat and radiator
That depends on the thermostat. If it's a 185 thermostat, the engine should run at 185. If it's running too hot, check the thermostat, radiator and water pump. If it's running too cold, replace the thermostat.
The thermostat is located inside the housing on the right side of the engine. There is about as big as a woman's wrist running from the radiator to the engine on the right. It connects to the housing in question. There is generally a bolt on the top and nut on the bottom of this housing that will needs to be removed. Inside lies the thermostat.
This is likely a stuck thermostat.
Bad water pump , problem with engine cooling fan ( if it is actually running hot and not a problem with the gauge or sending unit )
broken thermostat; blocked hose to radiator or hole in hose; leak in radiator; etc..
could b thermostat going, radiator cap bad or it may just be dirty/broken down coolant that needs to be changed.
Assuming repairs have been performed properly and there are no DTC's; you have an electrical problem.
coolant temp sensor water pump
if your radiator is in good condition with no leaks from hoses then i would recommend removing the thermostat out then place the thermostat housing back on top up coolant a check your flow by removing cap from radiator. If flow is good then it sounds like a blown head gasket.
Bad cooling fan or thermal relay. Bad water pump, clogged radiator.