Question about 2004 Ford Expedition
Misting? From under the hood or out of the vents? If it is out of the vents, that is normal when the humidity is very high. The air from the outside is full of moisture, when you cool it by passing it over the a'c coil, the excess moisture will appear as a fog briefly. If you put the control on recirculate, you use inside cabin air and that should stop the problem. All about relative humidity. Warmer air holds more moisture. For instance in the winter when the RH is maybe 30% outside at 30 degrees, you bring that air inside and warm it to 70, the RH drops significantly. Don;t have the formula off hand, but it whu you get the static electricity shocks in the colder weather.
Posted on May 27, 2010
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Posted on Jan 02, 2017
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