2001 Chevy Cavalier, overheated very quickly, we stopped, pulled over and cooled down and tried again. When we started, after a few minutes of driving the temp climbed again and it seemed that the lights got lower and only cold air blew from the heat inside the car. There was a smell of antifreeze. But no leak underneath car. Also, I hear a ting here and there. Not constant, but like we we driving over a gravel road.