Engine overheating have new fan, fan sensor fan sensor relay and new radiator on 2004 Honda Civic

new coolant added as well can it be the heater core?

Asked by for the 2004 Honda Civic
How bad did it overheat before all this stuff was replaced? From a COLD (sitting overnight) start , does it build up system pressure quickly(with cap on) , Like the upper hose is building pressure as you hold onto it right after start-up , or you feel 'bubbling' inside the hose?