Stock Problems/Issues Discussions related to warranty related issues and repairs, or other problems with the OEM parts and software for MINI Clubman (R55), Cooper and Cooper S(R56), and Cabrio (R57).

Misfire codes and oxygen sensor code

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Old Jan 18, 2019 | 10:33 AM
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Lavado
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Misfire codes and oxygen sensor code

Hello, so I bought my wife a 2008 mini cooper s to commute to school. The car has 85000 miles on it and is pretty clean. When I got it home I replaced a leaky vacuum pump. The new pump is holding with no leaks. I cleared an oxygen sensor code and ran it. All of a sudden it started running rough and threw codes po300 ,301,302,303,304 plus the po13e again. I have sprayed for vacuum leaks with no success. I checked all connections I see no issues. I replaced the oxygen sensor and still have a rough idle and misfires. I ran live data and oxygen sensor are at 1.3 each in spec. Any ideas what I may have hit or disturbed during the the vacuum install or oil change. Thanks
 
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