Quote:
Originally Posted by SnowRacer
A miracle hath happened!
Finally got to do a half a dozen WOT runs after having the CCV/PCV valve heater replaced under the BMW recall.
No more smoke cloud, no more misfires, no more deluge of fault codes! Unbelievable.
I still do have the O2 heater control sensor 2 faults for both banks (P0036 and P0056), but it runs great. I'll replace those two post-cat O2 sensors soon and then it should be back to 100%.
Just to recap I had already replaced the valve cover which has a built in new CCV, also replaced the CCV hose which I found was perfectly fine after taking it off. Apparently the vent hose valve heater must have been clogged or otherwise dysfunctional enough to create chaos.
A big thank you to George (gbalthrop), dpaul, and Neil (neilj35) for your knowledge, willingness to help, deep troubleshooting abilities, and your wealth of suggestions!
Thanks again,
Gary
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Great news!
I admit to thinking that it was very unlikely that the heater fault would plug that vent but clearly I was wrong about that.