fuel rail sensor
Check the connections on the wheel sensors.
cuz the engine gets to hot and even it's turned off it still needs to cool down so the fan keeps running to cool it and if u take a look at about half an hour after you turn the engine off you'll notice that it's off as it has cooled the engine :)
fuel, fire, and compression
Oil is not a coolant, it is a lubricant, but it keeps the engine lubricated to prevent friction, which reduces heat and makes is run cooler. Water in the radiator, and the radiator fan, is what keeps the engine cool.
might be a misfire in a cylinder...
It prevents the liquid within the engine from freezing or boiling. Coolant does just what the name implies. It keeps the engine cool, meaning it keeps the engine at the correct operating temperature. It also prevents corrosion within the engine and cooling system.
It keeps the engine from over revving.