I purchased this car new and the output of the fan for the AC has never been very strong. Even when the fan speed is in position 4 (fastest), the amount of air being delivered is nothing to write home about. Although, the fan sounds like it is running very fast. It seems to have gotten worse as the years have passed. Is there a filter somewhere that may be clogged? Has this always been a problem with this model?

Thanks in advance for any help...