After I did my harmonic on the nc 5l, I cannot hear the fan going like it used to on start up...... could it be that its been too cold lately to start it up? The fan runs when the engine is going and the temp is always low but It was 3 weeks ago the car was last ran and I remember it being alot louder???? I did not drop the fan when taken out and inspected it before putting it in and it looked brand new. Could it be its not normally loud and I just got used to hearing the twin thermo's on the magna going and thought the clutch was louder? Have I lost my marbles?