I was driving and my check engine light came on, it only stayed on for a minute or so, then It went back off, on my way to drop some one off, it came on again, I turned the car off for a minute and then when I started it to take off again, there was all white smoke that came from under the hood, once the car cooled off and I looked under the hood, the radiator was cracked on the top, what could have caused this to happen, I bought a new radiator , put it in and it still ran hot , then I bought a new thermostat put it in and the car is still running hot....please help
