Cayenne S misfire cylinder 5/6
This has likely been reviewed before in the forums, so I apologize in advance. my 2003 Cayenne S with 160K miles is throwing random misfire codes in cylinder 5/6. I have replaced all of the spark plugs, and the 2 suspected coil packs, however I am still getting the misfire. When I disconnect the coil packs from 5/6 the engine firing does not change. I suspect a wire harness issue. Has anyone had a similar situation and what was the fix?
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