Good morning. I have a 2007 Saab 9-5 Aero and with the Texas summer heat picking up have noticed that my AC fan speed is off. The fan speed will go to high but the air doesn't blow out at high. It does seem that maybe every 10 times I start my Saab the fan speed does work at high but then the next time it will only blow on low even though turned to high. Any helpful thoughts? Thank you!