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Why won't your 2003 Jeep Wrangler Sport's AC blower not change from defrost no matter what you have it on?
Wiki User
∙ 16y ago
Check for a vacuum leak either under hood or under dash
Check the operation of the vacuum actuators under dash
Check the operation of the selector switch
Defrost is the default settting for this system
Wiki User
∙ 16y ago
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