Originally Posted by cheechako77

DJ, Salad...thanks for the additional info. Unfortunately I have just tried setting the heater to the non defrost settings, which is another reason I feel its not getting any outside air. Not sure about running the A/C but will give it a try. But dang, hate to cut the mileage even more. And, lol, not sure who said to just open a window...but even that doesn't work!!! I guess I'll either keep trying a combination of things, or give in and pull the dash to see if the venting system is clogged, colapsed, or whatever the situation might be. Have a good weekend guys.