Well, not sure what it is meant by "pump is used again" - sounds to me if the pump was taken off and reinstalled? Probably doesn't apply to new pumps?

Anyway, some update. I *think* the cooling system is working based on the coolant temperature reading but I need to verify few things.

* Is it normal to have the radiator fan start running when engine is started at cold? I was told that this normally only occurs if engine is hot or AC is on.
* My car's keep saying coolant level is low, although the coolant level is fine. The mechanic told me the sensor might be broken. Does the coolant sensor break like this easily? It was fine before the waterpump broke down.
* How long does it normally take for the coolant temperature to reach 100C? With outside temperature of 25C, it took almost 10min to reach 100C, from 35C. I'll have to compare this against my other car but does this sound normal? My concern is if the thermostat is stuck open now, instead of being regulated under computer control.