Quote:
Originally Posted by bmwlover0725
I appreciate the ongoing help here man, I really do!
So, as far as the exhaust goes - my trans and flywheel clutch assembly all that was replaced recently. This problem started happening over a week before though. I've traced wires to be sure, but I doubt that would be it anyway given that it works for a while and then fails. As far as exhaust goes, same thing... came out when tranny was replaced and has all new gaskets as well. I've also looked for leaks to be sure, but like I said this started happening before that job anyway.
Timeline of the tune dates back about 4 years (BPM) and same with test pipes. O2 sensors were new back then as well. This problem occurs on bank 1 only. Changes sensors fouls out the bank 2 sensors when in bank 1. It goes through one every 150-350 miles I'd say. Lastly, the hard starting just happens when starting from cold and goes away after a few seconds, but it's normally very rough - however it wasn't this morning when I tried to take a video of it  |
Sorry, I'm still not clear. If you don't mind, be really explicit and linear. Here's a sample timeline - change or add to it if it makes any sense to you
4 yrs ago: tune and test pipes
4 yrs ago: both O2 sensors replaced
5 weeks ago: bank1 O2 sensor code appears
4 weeks ago: exhaust removed and replaced for clutch/flywheel job.
3 weeks ago: bank1 O2 sensor replaced. After 150 miles, code reappears
2 weeks ago: swapped bank1 and bank2 sensors. After 150 miles, code on reappears on bank1. Bank2 OK
1 week ago: bank1 O2 sensor replaced again. After 350 miles, code reappears
Finally, what exactly does this mean:
"Changes sensors fouls out the bank 2 sensors when in bank 1"