2011 Cruze 1.4L Eco 6 Speed Manual
About a year and a half ago, I had the well-known issue with these codes being thrown, and had the valve cover replaced. The start of that journey is here: http://www.cruzetalk.com/forum/25-g...check-engine-p1101-p0171-traction-contol.html
But, after that, I actually had to take it back 3 or 4 more times, because every time I got it back, there was still an oil leak and codes throwing. Finally, they kept the car for about a week, and when they gave it back, the problem was fixed.
Fast forward to about a month ago. The car is no longer under warranty. Check engine light came on, and threw, in this order, B2AAA, P0106, P0171, and P1101.
The car is idling hard as well, and will die while sitting in bumper-to-bumper traffic if I can't keep some gas going. There are also power fluctuations. For example, sometimes if I am accelerating in first, then I release the accelerator and push the clutch in anticipation of going to 2nd (or maybe idling because I am in traffic), the engine will continue revving up, sometimes for several seconds. I've never had it come close to redlining, but it's gotten pretty far up there before it finally stopped spazzing out and coming back down to idle RPMs. I've had my hand near the ignition multiple times, ready to kill it if it didn't stop revving.
Anyway, popped the hood after the codes threw the first time, and could definitely feel and hear the air from the PCV, so I needed to replace the cover... again... this time on my dime, since no more warranty.
I ordered the cover, and when I removed the old one, the first thing I noticed was that the dealer had but sealant underneath the gasket at the points where the sections of the block came together, just on either side of the timing chain. See picture. I had already scraped off the built-up sealant on the inside before i thought to take a picture, so what you see is what seeped out to the outside.
Anyway, I installed the new cover, test drove it, lots of oil spitting out, got home, took off the cover, and apparently the gasket had fallen out when i was putting the cover down, and i had put a bolt through the edge of it, so that was shot. I examined the old gasket, and it looked OK, so I re-installed the new cover with the old gasket. But, that didn't work either. Faint smells of oil burning, codes still active, bad idling.
So, I thought maybe the dealership was on to something when they put that sealant on. Like maybe my block was a bit 'off' and it wasn't flush enough at those transition points to create a good seal, so I'd need to seal it as well. (I tried to call the dealership to see if the tech had made any notes, but they said there were no special notes, and the tech no longer worked there).
So, bought high-temp RTV, pulled the cover back off, and there was oil all in the ridges of the gasket and, of course, all over the lip of the block.
Went and bought a new gasket, and installed it, WITH the RTV.
I test drove it for several miles, and after a few, the codes came back on. WHen I got home and was under the hood, it started idling rough and died. But, I can't detect any smell of oil (I have been able to before), and I spent a lot of time examining the gasket all the way around, and I can't find any leaking out anywhere.
So, I'm stuck. I think the cover and PCV are good, but I'm still getting the codes, and obviously it's not idling great. No return of the phantom power fluctuations as of yet, though.
I could take it to someone to look at, but I'd like to have an idea of what to tell them to look at next so I'm not presenting a diagnostic challenge that's going to take weeks and tons of money to get through. Or, I'd love to try another fix on my own if I think it fits my skill level. I'm just not sure what to try next.
Thanks in advance!