Really? That's really never happened with me before. Maybe it has and I just didn't notice! Anyway, went for a test drive and the temp gauge while cruising has decreased to a lower tempature. I'm not surprised since I lowered the temp on the tstat. After I drove it, I parked on the side of the street and the temp gauge started to go up again, then decreased slightly and didn't move. Could it be the coolant temp sensor?