My wife was coming home the other night and all of a sudden her car starting smoking from under the hood and the car shut off and will not start. The smoke was from radiator fluid burning,from where it came from I do not know. I suspect the coolant got hot and came bubbling out of the reservoir. Now the car will not start theres a cranking sound when you turn the key but no start. I was wondering if theres a sensor that would trip when the engine got too hot and would prevent the car from starting? I suspect a water pump or thermostat is the culprit for overheating, I checked all the hoses and all are okay. Can someone help?