2006 C230 Running Lean - Misfiring - Mercedes-Benz Forum

 
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post #1 of 2 (permalink) Old 06-21-2013, 02:59 PM Thread Starter
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2006 C230 Running Lean - Misfiring

I have a 2006 C230 with 170,000 miles. Within the last week it has started to run terrible. It misfires and knocks on start up and doesn't seem to get better even after it's warmed up. It's showing the following codes - P0351, P0304, P0174, P0300, P0171 and P0301. I cleaned the MAF sensor hoping that would help some but it didn't change a thing. I'm thinking it may be a vacuum leak but I'm not sure where I would look if that is in fact the cause. From what I've read here it could also be the intake manifold but I'm hoping that's not the case. Any help would be greatly appreciated. Thanks!
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post #2 of 2 (permalink) Old 06-22-2013, 03:13 AM
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