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3rd Gen Ram Tech2002-2008 Rams: This section is for TECHNICAL discussions only, that involve the 2002 through 2008 Rams Rams. For any non-tech discussions, please direct your attention to the "General discussion/NON-tech" sub sections.
Yes, your recirculation door has broken, and fallen, blocking your fan inlet. Take the fan off, and reach up. You will feel it. As to a repair, do a search, there are tons of threads on this subject.