My car (62000 mileage) is idling, stalling, and rides rough at both low speeds in town and high speeds on the highway. It happens all the time, no matter what the gear, or in park or neutral. The codes that come on and off are the stabilitrak and the cylinder misfire. I'm consistent to get regular maintenance, and I just changed all the spark plugs. In your expert opinion, what does this sound like could be the problem?
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