Anyone know what the coolant temp should be? It's usually been 190-196, but today I was sitting in line at the bank and I decided to check it. It was at 203 and kept going up. At one point it got to 214. When I started driving, it went down to 187? Is it time for a trip to the dealership? It's a 2008 Sport Coupe. would it still be under warranty at 45,000 miles?