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Does it tend to stall when you are first starting to drive the car, or after the engine has warmed up for awhile. Also, what area do you live in, is it very dusty? Yes it could be the filter, and it is time to replace it if it has been a year, but for the car to act like that after just one year would mean a fairly dirty filter. I would replace it anyways, but I doubt that is the problem. One more question, even if it does not stall, do the RPMs drop lower than expected when idling, or fluctuate at all?
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