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Most likely the fuel filter need changed. If it has been more than 12,000 miles I'd change it anyways. If it's been more than 20,000 miles then I would take the IAC out, per auto manual instructions, clean it and put it back in. Hope this helps.

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Q: When you start your 2000 accent it runs rough but when you shut it off and start it again it runs fine until ipush down on the throttle it starts to die could this be a throttle position sensor or so?
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