It could be anything and I mean anything. It could be a mass air meter, injector, vacuum leak, mechanical engine problem, DME problem.. the list goes on. You guys need to find a good reputable shop and have it properly diagnosed. If possible find a good dealer who has the really good diagnostic tools to look at it and determine what's going on. The possibilities are just endless and as of this moment anything would be pure speculation. Speaking of a/c... does the car run better/cleaner with the a/c off? you might take a look at that... remember, anything is possible.. I've seen stranger things.
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Plano, TX 75074
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