It's supposed to run, even with the key off until the radiator is cool. If it never stops you've probably got a bad temp. sensor switch.
If a Hyundai Elantra stops running after an hour on a running speed temperature, it could be a bad thermostat. It is best to have a mechanic take a look at it to determine the exact cause.
Bad temperature sensor unit? Cooling fan not working? Water pump not circulating coolant? Radiator plugged or restricted? System airbound? Thermostat not opening?
on the drivers side of the engine. you need to remove air box then the hose that connects to thermostat. Still stumped? run your car until its at running temp. Then carefully touch radiator hoses. follow the colder hose to the engine and your there.
it is probably the thermostat any one can change one on a Hyundai they cost under $15.00
change the radiator cap. Did you check the water pump to see if it is pumping correctly? Did you check the cooling fan for proper operation? Did you bleed all air from the cooling system after adding fresh coolant. Did you install the thermostat correctly, (Spring down)? And lastly, does it possibly have a blown head gasket? I put this in my Watch List, and will await you reply.
Debris in the hoses or reservoir could cause the motor to overheat. Also, running the pump without fluid could do the same.
Just go to your local auto parts store, make sure to know your make model and year. Engine size won't hurt either all though i think Hyundai has been running the same engine for a while.
im having the same problem with my 2000 elantra! after looking around on the internet im pretty confident its the crankshaft sensor.
My best guess would be for the parking break. Easy way to test, when the car is running just pull the lever or step on the lever and see what light turns on
there is a pipe running along side of inner wing on the Drivers side this is the ac pipe, halfway along toward windscreen there is a valve on top of pipe usually with a green cap on it, that is where freon goes..
Burning oil in the combustion chamber.AnswerNo worries, mine does the same thing. Just try switching to a thicker oil and check regularly.
It is important to know the symptoms of a bad car part. The symptoms of a coil going bad would be having a trouble starting and running the car, the coil getting hot, and poor fuel economy.