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Hi Everyone,

I recently purchased a 2007 750i with 95k miles. I am getting codes P2187 and P2189, system too lean at idle banks 1 and 2. At first, these codes were also coming up with a misfire on cylinders 5 and 8. After resetting the cel, P2187 and P2189 codes came back but this time with a cylinder 4 misfire. The car does idle rough when first started but once i start driving everything is normal. Someone told me it could the catalytic convertors, considering its throwing off different misfires, not quite sure how that works. Anyone have any similar issues????

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Have you done a tuneup on the car and replaced spark plugs and coils?. Do the above first and see what happens then start at spark plugs and coils if they have not been done. 95,000 miles about the time Sparks and coils crap out
 
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