Hey, 1 month ago my 2008 3.7 Nitro's thermostat went bad. I didn't realize it until it was in the red. Long story short, it popped the radiator. I just installed a brand new Mopar radiator, hoses, and thermostat. I fill up the radiator and run it waiting for the thermostat to open and drop the coolant so I can add more. Never happed. The temp got up to 234°F and I shut it down. Radiator cap is still cool. Wtf man? Is there a pocket of air? Bad brand new thermostat? Any suggestions welcome.