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How do you fix a car heater that gets power to the blower but does not blow out any air?
Wiki User
∙ 15y ago
Hi. There are two possibilities causing this problem,if your car is A/C equipped,there is usually a diverter door that is operated by a vacuum motor or diaghram,vacuum is switched by heater or A/C control,another possibility is outside air is usually ducted in from an opening under the lowest part of windshield,make sure this is not blocked,last,on vehicles with high milage,gum from antifreeze lines heater core passages causing little or no heat exchange,more than 90% of the time this is cured by disconnecting both input and output water hoses from heater core and using an air gun giving a good air blast to water ducts,if this does not work make sure engine water temp is adquate,a motor block reverse flush may be necessary,Good Luck.
Wiki User
∙ 15y ago
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