The technician at the Air Conditioning place told me that because I have a weak clutch fan i'm not getting the full effect of the A/C. My clutch fan is due to change.
Also, when the A/C is on the Auxilary fan spins at a low speed. When the engine temp increases beyond a predetermined point, the fan spins faster. Is this good.
My father's MB however, when you turn on the A/C, the Aux. fan spins at a very high speed and its a 12 blade fan so it makes noise like hell. Now the A/C in that car is great.