That isn't totally clear on me. I've done some light looking up in the forums and generally and it seems like it stems from new parts heating up and all that, so it's partly engine, partly AC. I have 2.3L Auto and have the same thing. Personally I haven't seen it as a problem. All signs point to it being a lesser talked about new car smell.so its an AC thing and not an "engine or tranny" thing?
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