Why is my Scion XB over heating AGAIN?!?!? In the last 5 months I've had my Radiator, Radiator cap, thermostat and spark plug coil replaced. Now my car is overheating again. My Catalytic converter needs to be replaced...maybe this is the reason? It is a 2006 Scion XB with over 90,000 miles on it. I change the oil and oil filter regularly. Is there something else that can be causing this? I'm just sick of taking it to the mechanic and frankly I'm running out of money because there is no more warranty on my car. |