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My Dodge 3500 ac was blowing fine this morning, and then all of a sudden it had a burn mildewy smell, and now its blowing hot air?

Any suggestions?

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closed as too broad by Zaid, vini_i, DucatiKiller, ᴘᴀᴜʟsᴛᴇʀ2, Fred Wilson Dec 14 '15 at 4:09

There are either too many possible answers, or good answers would be too long for this format. Please add details to narrow the answer set or to isolate an issue that can be answered in a few paragraphs.If this question can be reworded to fit the rules in the help center, please edit the question.

    
Were there any noises or anything before the ac went out? – Seminecis Aug 22 '13 at 19:11
    
Too many possibilities would explain the hot air. Compressor seized, belt broken, sensor malfunction, compressor clutch malfunction, etc... – Zaid Dec 13 '15 at 19:11

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