I took my MY05 out today and noticed that even with the fan turned on to max there is no air flow though the vents--not the ones on the dash; not the lower ones. The interior get some heat, but no air flow. any ideas? i recently had all-season tires put on at the Tire Rack here in South Bend. the car was up on jacks, but i can't imagine that has anything to do with it. any insight? thanks much.