# Foggy Windows and Frustrated

**URL:** <https://community.cartalk.com/t/foggy-windows-and-frustrated/24377>\
**Category:** Maintenance/Repairs\
**Tags:** prizm, doors, blower-motors, windows, filters\
**Created:** [January 4, 2009, 10:06pm UTC](https://community.cartalk.com/t/foggy-windows-and-frustrated/24377 "2009-01-04T22:06:17Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![dougiefresh27](https://avatars.discourse-cdn.com/v4/letter/d/a3d4f5/32.png) [@dougiefresh27](https://community.cartalk.com/u/dougiefresh27)\
**Post date:** [January 4, 2009, 10:06pm UTC](https://community.cartalk.com/t/foggy-windows-and-frustrated/24377/1 "2009-01-04T22:06:17Z")

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2001 Chevy Prizm. Now that it is winter the windows fog then frost when driving. At first I thought it was poor door seals which may attribute to the problem. I removed the glove box and reconnected the supply to the right side vent but not much has changed. I noticed that there is a blower with a filter and it appears that it may be stuck on recirculate. It is motor driven and I am afraid to pull on it, force it and break it. I don’t know how to test or replace this little motor. It gets so bad, especially at high speeds that the sides fog and frost, even the front starts to fog a little with heat and blower on high. The only thing that dries are my eyes. HELP!  
  
  
  
 In the summer time at night especially I have to have the defrost on full to try and address the moisture.  
  
  
  
 All of this is unsafe since I can’t see when I drive.  
  
  
  
 Please help.  
  
  
  
 Thanks,  
  
  
  
 dougiefresh27@hotmail.com

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**Author:** ![chevyblazer98](https://avatars.discourse-cdn.com/v4/letter/c/fbc32d/32.png) [@chevyblazer98](https://community.cartalk.com/u/chevyblazer98)\
**Post date:** [January 4, 2009, 11:49pm UTC](https://community.cartalk.com/t/foggy-windows-and-frustrated/24377/2 "2009-01-04T23:49:44Z")

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i have 98 blazer and have same problem. i had to change out my heater core, no more fog

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**Author:** ![Joseph\_E\_Meehan](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/joseph_e_meehan/32/21_2.png) [@Joseph\_E\_Meehan](https://community.cartalk.com/u/Joseph_E_Meehan)\
**Post date:** [January 4, 2009, 11:52pm UTC](https://community.cartalk.com/t/foggy-windows-and-frustrated/24377/3 "2009-01-04T23:52:28Z")

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I noticed that there is a blower with a filter and it appears that it may be stuck on recirculate.

We have a BINGO.

If it is stuck on re-circulate that is most likely it. When you say motor driven, do you mean electric or vacuum motor?

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**Author:** ![dougiefresh27](https://avatars.discourse-cdn.com/v4/letter/d/a3d4f5/32.png) [@dougiefresh27](https://community.cartalk.com/u/dougiefresh27)\
**Post date:** [January 5, 2009, 12:35am UTC](https://community.cartalk.com/t/foggy-windows-and-frustrated/24377/4 "2009-01-05T00:35:57Z")

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I assume it is motor since I see a little flat black box attached about where this filter flap would rotate to the other position. My thoughts are it is a fuse or the entire motor. Thoughts?

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**Author:** ![dougiefresh27](https://avatars.discourse-cdn.com/v4/letter/d/a3d4f5/32.png) [@dougiefresh27](https://community.cartalk.com/u/dougiefresh27)\
**Post date:** [January 5, 2009, 1:50am UTC](https://community.cartalk.com/t/foggy-windows-and-frustrated/24377/5 "2009-01-05T01:50:52Z")

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Is this expensive?  
It even fogs inside overnight. What’s up with that?