So i replaced my alternator finally, and I have new hoses, thermometer, and radiator. I added a bunch of coolant to my car and drove it yesterday. No problems at all. drove for like 30 minutes. So today i drove some more, went to autozone then to home then to autozone then to work. after autozone the second time my car started to overheat and then i got scurred so i blasted my heat... after all this it started to cool down a bit but it was acting real erradic.. staying in a good range though. So umm... air bubble or what?!?!?!