I'm yet to have an O2 sensor wear out. This one seems to be behaving normally when in closed loop. I'll do a rag test on it soon. It's also installed in the stock location.
They wouldn't put a sensor there if it couldn't handle the heat.
I'll be leaving the car for a week so I'll have to put this on hold.
Still hoping it was just some bad fuel.
But they do go bad. And stock location is often blamed. Stock o2 sensors are not the same as widebnd sensors. You said the issue happenes during cruise.... Is that not closed loop??? Then when you said you give it throttle, it accelerates fine. Which would mean that it runs better in open loop, when its ignoring the o2 sensor.
Il still say its the wideband.
