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Antifreeze and Engine Coolant
Heater Cores and Blower Fans
Car Heaters

Why does the heater only blow air when the car is moving?


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Wiki User
2004-03-02 07:15:57
2004-03-02 07:15:57

most likely cause will be a faulty fan speed resistor.shouldnt cost more than $50 to replace

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The heater does not blow air because it emits infrared rays that have heat molecules within them, thus releasing heat, not blowing it. A heater does not blow air becasue there is no moving air source within the heater. The heater emits infrered rays that cause heat to slowly flow out of the heater.

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heater on at idle and will not blow warm air. when moving it blows the warm air from the vents. what will cause this

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if the heater does not blow out warm air change the setting.

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you may not have the heater water hoses plugged in


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