I have a 2001 Toyota Celica Gt. I changed the thermostat, bled the system of air and waited for the new thermostat to work, however, after seeing the temp steadily climb and the thermostat not open, I turned the car to prevent overheating. I noticed the fans kicked on but the coolant boiled but did not go down. Is this a temp coolant issue? Waterpump issue? Or should I replace the current thermostat with a lower temp thermostat?? Please help... anyone!!