I own a 2000 pontiac sunfire with 121k on the car. The car has been flawless for me up until I noticed something wierd on it today. I was driving around my city today, and I realized that my car was getting alot hotter than usual. Usually it sits perfectly at 195 on the temp gauge in the dash/ It would got very hot at idle, but while I was driving it would go back to normal and not over heat. I check my radiator hose, and there is no coolant leak, but when I got into my engine bay, i did smell coolant. what could be causing this problem?