Quote:
Originally Posted by Woes_M3
Apologies if I missed this in the previous posts, but have you replaced the o2 sensors? I was getting intermittent whole bank misfires. After I had changed my o2s it went away. I'd sometimes get rough idle and car would enter limp mode.
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I've swapped the pre-cat o2 sensors bank to bank, the codes didn't change. Also monitored the voltages under various conditions and nothing seemed out of the ordinary, there are also no o2 sensor related codes. They have been replaced before probably within a few years, and the car only has 49k miles on it.
Still possible, will potentially look at swapping them with another set if something else doesn't pan out.
Also wanted to note that the guy with the bank 2 harness issue was getting O2 and SAP related codes, which we aren't seeing here, also his misfires weren't at idle when cold. His codes were:
2729: DME: Oxygen sensor, coast-mode diagnonsis before cat., bank 2
27B1: DME: Secondary air system flow rate, bank 2
None of those are present yet.