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Why is your air in your truck not blowing air through the front vents?
Wiki User
∙ 9y ago
Many vehicles use engine vacuum to operate the HVAC functions. If the vacuum supply is cut off for whatever reason the HVAC system defaults to the defrost mode only. Look for a disconnected, cracked or pinched HVAC vacuum supply line under the hood.
Also, if the vehicle has a cabin filter that is plugged up you will get poor air circulation.
Wiki User
∙ 9y ago
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Ac is blowing from all vents except front vents?
yes
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What is wrong if the AC on a 2003 is blowing air out the back but not out the front vents?
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