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where do i locate the lower ac hose on my car for recharge and what type of refr on 1992 Nissan Maxima

just trying to recharge my ac because its blowing out warm/hot air

Asked by for the 1992 Nissan Maxima
i rec you have it charged by a pro as to not damage other parts of the system. it could be either freon depending on if its been converted or not.
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How do you know it's low on refrigerant? Can be several causes. Does the compressor come on at all? If not , problem may be electrical. Without guages you may over-charge the system also causing it not to cool