The fastest way to defrost a windshield is to turn the defrost vent on without heat or simply open the windows. Another option is to warm the inside of the car by turning the heater on.
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∙ 9y agono heat to front window went defrost is on
on the dash below the windshield.
does fan door motorized or on a vaccuum line when you switch from AC to defrost?
Yes, the ac will run in the defrost position to dry the windshield.
Start driving with your air conditioning on defrost, the AC will defog the windshield but you need to be moving.
The defrost function simply directs air over the inside of you windshield. It's temperature is controlled by the temperature dial on your environmental controls.
Yes, the windshield defroster will turn the A/C compressor on.
You can, but it's better to defrost in the refrigerator for the same reason you keep the rest of the food in there: to keep it from spoiling.
If it only does this after a rain, chances are you have a leaking windshield. Or the aircond. drain is clogged, even if you are only using the defrost with heat the air-cond. runs with the defrost.
On my 1995 Ford Explorer when the defrost position is selected , and the temperature knob is set in the red area to get heated air to defrost the windshield , the A/C compressor will cycle on and off to help dehumidify the air, but the compressor ONLY cycles on and off in the DEFROST POSITION ( sorry if I'm misinterpretting your question )
With many vehicles, if the defrost mode is on, the ac will continue to run. This helps to clear the inside windshield from moisture.
Check the vacuum supply from the engine. If it is disconnected or cracked the system will default to defrost only.