Ford Focus Forum, Ford Focus ST Forum - View Single Post - Coolant and Oil Temps drop when using the windshield defroster/floor vents
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Old 01-23-2013, 12:30 PM   #2
Codreamn
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Join Date: Aug 2012
Fan#: 102049
Location: Thornton, CO
What I Drive: 2002 Black SVT

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Got a couple things that happen when you turn on the defroster. In defrost mode if you have A/C on the car it will activate the compressor which will also turn on the cooling fan as well, and when the fan motor inside the car is on it is moving air through the heater core which helps cool the water temp.
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