Why is it overheatingif i changed water pump and thermostat

Hello, have you actually experienced overheating -- temperature gauge all the way up, coolant boiling over? What are the symptoms? Remember, if you changed cooling system components, you also have to purge the air pockets created by replacing those components once repairs are completed. Has this been done? Finally, why did those parts get replaced in the first place? It's rare for a water pump to fail internally -- usually they fail for leakage alone. Have you checked to ensure your engine's cooling fan is working as designed? Use this link to find some shops near you that can help with your concern: www.repairpal.com/repair-shops