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ac not working

  1. 4th Generation Altima (2007-2009)
    Hello everyone, I have an 07 Altima here is the problem. The AC is straight blowing hot air (outside air) I took the car to a repair shop and they checked the ac compressor to see if it was working, if it was low on freeon.. everything is good they told me to replace the Ambient Air Temperature...
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