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      10-15-2012, 07:08 AM   #2
GreekboyD
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Drives: 2009 BMW 335d
Join Date: Jan 2012
Location: Toronto, ON, Canada

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2009 BMW 335d  [3.75]
Could be that your oxygen sensor is going bad. Either way it sounds like it's an emissions related problem so it should be covered under warranty.