Hello, I'm a newby, anyway I am having an overheating problem, my car does fine, but when I come to a stop the temp gague goes all the way up to 260 and stay I replaced the waterpump used dex cool, but the step I have not done is bleed the cooling system, will this make it run hot, and what is the proper way to bleed the system, the fans are working fine, and the thermostat have been replaced twice