On the morning in question, did you happen to take a particularly hot shower, and then get in the vehicle very soon after?
That would explain why my windows don't fog up. <img src="/forums/images/graemlins/zombie.gif" alt="" />
The
"driving a while then it fogs up even with the fresh air on" still leads me to think there's some sort of problem with the fresh air selector. Either that or you need to stop breathing while driving. <img src="/forums/images/graemlins/ignore.gif" alt="" />
Try this.
1. Run outside and start the vehicle
2. Put it on "High heat" and "Fresh Air" (you know, the NPR show with Terry Gross)
3. Go watch TV for 30 minutes while it warms up.
4. Go outside. With no one in it, and fresh air coming in, are they fogged up?
Now, if they are fogged it
could be from moisture in the car that was there before and melted with the heat on. Boots full of snow/ice, snow/ice into floor mat, hot air from heater blows on mat and evaporates, then condenses on 20degF windows.
5.
Crack the windows an inch or two and defog with high heat.
6. Back inside for more TV. Man it's cold.
7. Get Mom and some perfume.
8. Run to your Rodeo and get inside. Roll up the windows and put it on recirc.
9. Have mom stand out in the cold and spray perfume by the windshield intake.
10. You might smell it faint (it's not air-tight), but not strong.
11. Now switch to fresh air (See your paper for your local NPR station)
13. Remind a cold and angry mom that you're doing this because she's the one that pointed out there was a problem. That'll go over well. <img src="/forums/images/graemlins/rolleyes.gif" alt="" />
12. Have angry mom spray perfume again.
13. You should smell it strong.
If you don't, then your flapper isn't opening (nor not opening all the way) to let fresh air in.
Hope this helps. Let us know the results. Word to your mother! <img src="/forums/images/graemlins/lol.gif" alt="" />
Wayne