If the fan is not pulling enough to cool the motor, then you either need a bigger fan or need to install it correctly. a $100 fan off ebay or off the shelf from napa/pepboys...etc will not cut it.
My taurus fan has worked perfectly since I installed it. Didn't get over 200 during repeat continuous autox runs and it will suck a piece of paper out of my hands from the opening in the front bumper standing still.