After Engine Swap Downstream O2 Sensor Question

[tmontague]

I am using my OEM yaris connector without an issue. The upstream one would have to be specific to the engine but not the downstream one. The downstream one is a "dumb" o2 sensor not like the upstream one which is a wideband sensor and controls afr's

[06YarisRS]

Originally Posted by tmontague

I am using my OEM yaris connector without an issue. The upstream one would have to be specific to the engine but not the downstream one. The downstream one is a "dumb" o2 sensor not like the upstream one which is a wideband sensor and controls afr's

Thanks Trevor. You say you're using the connector, you mean the whole Yaris o2 sensor, correct? I see Denso sells one that requires splicing. I think my problem is due to the wiring as it's very intermittent. If I can fix the wiring, I'll just use it, otherwise I'll just order one. Thankfully the downstream ones are a lot cheaper. I bought a real cheapie off ebay a while back for my '06 and had to put a defouler on it, but worked fine after that.