hey im new to this site and have a 93 eldorado 4.6 northstar when the car is cooled down it will start and when it does it says engine overheated stop engine and dies..i recenly notice that when this happens i turn the key to the on postion the fans kick on and stay on for 2 -3 min then the fans turn off then i start the car and it doesnt display anything and stays on .it only does this when the cars been siting for a few hours and the engine is cooled down .and it doesnt show any codes at all?its been doing this for a few months and cant figure it out i changed the water pump,temp sensor,radiator,thermostat.. any one have any ideas please help!!!