Overheating, Radiator fan come on as soon as the engine comes on on 1995 Chevrolet Impala SS

I changed my water pump, changed my Thermostat, and also changed hoses. My car still overheats. how much antifreeze does the car need to operate?

Asked by for the 1995 Chevrolet Impala SS
approximately 12 qarts.
the fact it has repeatedly overheated, you may have internal engine damage. go to a shop and have them do a hyrocarbon test on the cooling system.

thanks i wonder how much that wold cost me. Both of the hoses to the radiator get very hot the fans come on as soon as I start the engine. Does the water pump sensor gotta be very tight I put it on with a rench, I was told to use a deep socket thing