2005 defroster is fogging up windows during rainy weather | Ford Thunderbird club group 1955-2005 T-Bird models

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2005 defroster is fogging up windows during rainy weather

  • Thread starter Thread starter davidfarmer
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davidfarmer

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Old member back after 5 years Thermostat, air conditioner, heater vent issues?? 55,000 miles. When I turn on the defroster in rainy weather (live in Seattle) now fogging the windshield and need to pull over, very unsafe. Anyone know what might be causing this??

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When you were posting, you thought "2005 Anniversary Edition" was a summary of what your post is about? How is anyone supposed to know what your post is about when you don't even title it?

Post title has been revised.

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David, Does the A/C work normally? You need dehumidified air moving over the interior windshield surface to clear the fog vapor.
 
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Two possibilities. Make sure the A/C is charged and cycling on when in defrost mode.
Unfortunately the other possibility is a leaking heater core.
Do you get a slight smell of antifreeze when the window fogs up?
 
In addition to the AC functionality and heater core, make sure the AC Evaporator drain isn’t blocked and you have a plenum full of water.
 
Sometimes using the recirculated air mode will cause the window to fog up in cold moistconditions.
 
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