I have a 1994 Saab 900se 2.5 non convert and it appears the blower is not blowing as hard as it should. It takes forever to defrost the windshield and warm up the car. Last weekend I replaced the cabin filter and gave the motor a shot of wd40 thinking that would help. I also recently replaced the ACC, that didnt help either. The ACC needed to be replaced anyway, I didnt do it just for the blower. Any ideas as to why this is. It blows a little, has a small annoying whistle to it but its not enough. Thanks.