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When you say all maintenance is up to date, does that include the oxygen sensor(s)? At least the upper oxygen sensors should be replaced occasionally to keep fuel economy up.

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โˆ™ 2006-03-30 21:38:31
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Q: Why did your 2002 Hyundai accent 15L hatchback start getting worse gas mileage All maintenance is up to date and spark plugs new?
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