We changed our radiator cause our car over heated but not to the point where it messed up anyway the antifreeze we put in goes directly to the reserver

Thoughts:

When you refilled the system, did you fill the radiator to the neck, install the radiator cap, and fill the reservoir only to the "MAX Line?" Coolant is supposed to flow back and forth from the engine to the reservoir. When the engine cools, coolant is sucked back into the engine and radiator.

Did you replace the radiator with a brand new radiator or one from salvage?