I read the same threads and pulled the trigger on the Toyota ones. I just didn’t want to f*** around with parts that didn’t play well with the ECU. Nobody has time for that. That being said there are still lots of folks using other O2 sensors with success. IIRC Denso ones work ok, but I would encourage you to do your homework before you shell out the cash.
Everyone is quick to say “replace your O2 sensors” around here. It seems like many times it’s justified (codes etc.) However what’s hard to untangle is how often the old o2 sensors were of poor quality, or if the replacement was part of a “throw new parts at the rig” strategy of repair. While this can make sense for our rigs that have old parts, it can get expensive very fast and often not solve the original problem.
Don’t let me dissuade you from replacing the O2 sensors, but in my own personal LC baselining/ repairing journey I found that having a good plan, and good reasons for parts was also an important factor.
I had good success with the Irwin extractor bolts from the box home improvement store when in dismantled my exhaust system (except for the ones I count reach easily). I highly recommend using some on blaster or Kroil aero foam penetrating oil on those bolts for a few days. It might help a lot. I would also suggest buying a high quality wrench to break those bolts loose. I switched from some cheesy HF wrenches to thrift store craftsman, SK, Fuller (made in Japan) and wright tools wrenches. They made a huge difference. You probably are on top of this, so please excuse if you’re dialed in on tools. Not in anyway trying to be condescending!
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