Why is it's still running hot after changing the water pump radiator and thermostat and all hoses

Have you ensured that after you replaced all those parts that you purged the air out of the cooling system that was introduced when opening it all up? If there are air pockets, they will push out and boil over the coolant. Additionally, have you checked the cooling fans to ensure they are operating? Cooling fans that don't work will allow the engine to overheat especially when sitting still at idle. Use this link to find some shops near you that can help with your concern: www.repairpal.com/repair-shops