freezing weather windshield fogging up

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bigjoe1947
Posts: 2
Joined: Tue Jan 13, 2015 11:57 am

freezing weather windshield fogging up

Unread post by bigjoe1947 » Tue Jan 13, 2015 12:15 pm

'06 Impala. At freezing or below, windshield fogs so bad you can't see. No smell of antifreeze.


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carriedi
Posts: 2266
Joined: Wed Apr 10, 2013 12:42 pm
Location: Oregon

Re: freezing weather windshield fogging up

Unread post by carriedi » Tue Jan 13, 2015 8:16 pm

couple of things you might want to check.

first, is your air conditioning compressor turning on when you have the heater set on defrost. it should come on. it acts as a dehumidifier to put dry air up the defrost vent.

second, check to make sure the drain for your heater/ac box is not plugged up. you can have water built up in the box if the drain is plugged up
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bigjoe1947
Posts: 2
Joined: Tue Jan 13, 2015 11:57 am

Re: freezing weather windshield fogging up

Unread post by bigjoe1947 » Tue Jan 13, 2015 10:34 pm

Thanks. I'll check these.

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