I replaced the thermostat about a month and a half ago and everything seemed fine until yesterday. After sitting overnight, I go to start the Jeeplopy, and it cranks a few times, but wont turn over. After giving gas and trying again a few times if finally sparks to life. Odd thing is that the temp gauge already says about 160. After work, I go to start it again. It starts fine, but the temp gage still says about the same thing.