I have a 1996 Chrysler Concorde. Sometimes, over the past three weeks when I started my car, I heard a creaking noise coming from under the hood to my right. This only happened when I left the car sitting overnight or a longer period of time, and not when I just drove it a few hours ago. Also, it's taken longer for the engine to turn over. It happened again today, and after I started driving a bit I noticed that the temperature gauge was really close to the C mark, but it gradually went closer to the center. I know that it's a big problem if it's too close to the H mark, but is it likely that any problems will rise from the cooling system being too cool? That question sounds stupid even to me, but better safe than sorry.