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2.3L 4cyl or 3.0L V6, 6th Generation

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fuel is too rich

car wont pass smog no check engine light on and it cuts out while driving

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1 Answer

If there is no any check engine light on dash I suspect first oxygen sensor.... you need to check long and short fuel trims and check how oxygen sensor reacts to added fuel(spray brake/carb cleaner to intake) and added air(create vacuum leak)

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