Today, when I went out after my car sitting still for 2 days, it took a very long time for the car to heat up. Normally, my needle has come off of pegged by the end of my street. But today, I was into town, and it was still only 1/2 of where it should be. Could my thermostat be sticking open do this? Would the fact that I had the defroster on have anything to do with it? Normally, I see the car heat up faster when I run the A/C or Defrost. Thanks... -Nick