Should your 2001 Buick Century cooling fans run constantly?
No, your 2001 Buick Century's cooling fans should *not* run constantly. They should only run when the engine coolant temperature reaches a certain point, or when the A/C is on. Constant running indicates a problem, possibly with the cooling system itself, the fan control module, a temperature sensor, or a wiring issue. You should have this investigated by a mechanic to prevent overheating and potential engine damage.