why is my jeep still overheating

What is your question?

I have a 1999 jeep loradoe about 250,000 miles the other day it over heated started spitting coolant and smoke we look and the radiator had split we replace the radiator the thermostat pump and fan our still good still seems to be overheating all the way up to the top of the gage were having a hard time figuring out why?

What makes this problem better or worse?

replaced all things not sure

How long has your 1999 Jeep Grand Cherokee had this problem?

a week