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      04-10-2024, 04:51 PM   #7
kadennm
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Drives: 2012 bmw 550i
Join Date: Feb 2024
Location: Los Angeles

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Apologies it took awhile. Recently replaced both upstream and downstream o2 sensors and noticed somewhat of a difference. The drivetrain malfunction disappeared but I still experience a rough idle sometimes. Thinking it could be fuel injectors or something similar. Hope this helps.
Appreciate 0