Overheating problems

What is your question?

I have a 300 with a 3.6l engine I have replaced water pump thermostat and it still over heats I have seen no white smoke at exhaust I have did the chemical test on antifreeze to see if it was a head gasket but still nothing.. it will idle all day long and not over heat untill u get about 5 miles down the road.. I'm also getting alot of pressure at resivour after overheating... Any suggestions thank you

How long has your 2014 Chrysler 300 had this problem?

A few weeks now