Please please help, replaced radiator-sputtering blinking cel

[anti-bling]

I accidentally put a hole in my right radiator, the car was never driven while it was losing or lost coolant. I installed my radiator today and all seemed to work fine. After hooking up, I filled the coolant. When I started it up it was fine until it started sputtering and the cel was blinking. It feels like the maf is bad? When I checked the coolant it was gone from the tank, so I filled it up with more. Now it idles perfectly, but when I start moving, it spotters. So I parked it. I only replaced a radiator!? What the heck could cause a blinking cel!!!??? I'm scared and frustrated. Pleeeaaase help.

By the way could it be that there is air in the cooling system?