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Old 07-04-2009, 08:23 AM   #1 (permalink)
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2000 chevy cavalier

several months ago the catylytic converter was replaced and major tuneup.
mpg is worse than before the repair. before mpg 28, after mpg 24.
i need advice. car is running smooth.
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Old 07-04-2009, 12:40 PM   #2 (permalink)
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Re: 2000 chevy cavalier

New converter probably more restrictive, causing motor to work harder..
That would be my thought..
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