# Replace EGO Sensor at NOT or cold?

Posted by Will (93 4dsc) on July 12, 2003 at 21:56:48: I hope to hear from someone who's done the oxygen sensor before. I was told that you should replace it when the car's at operating temperature when it's easier to remove. However, just like spark plugs, I am under the impression that if I do it while the car's warm, that when it cools, the metal that contracts will tighten around the sensor and mess up the threads. Can anyone clarify for me? Thanks in advance. Replys: It was very dirty down there because of my undercoating, but it was finally done. No more rotten egg smell. Thanks guys. n/m Will (93 4dsc) 17:27:07 7/13/2003 (0) Will let me tell you, it is easy as pie, it was one of the first DIY things i did to my car... mentat (93se 5spd) 13:07:38 7/13/2003 (0) bah.. just grab a 17mm wrench and pull it out. I've never had a problem removing one- especially when you're going to throw it away anyway. nm Matt (93SE) 12:50:41 7/13/2003 (0) I did mine stone cold without issue. n/m The Max (92 J30 Maxima (turbo project nearing completion)) 22:06:22 7/12/2003 (0)

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: I hope to hear from someone who's done the oxygen sensor before. I was told that you should replace it when the car's at operating temperature when it's easier to remove. However, just like spark plugs, I am under the impression that if I do it while the car's warm, that when it cools, the metal that contracts will tighten around the sensor and mess up the threads. Can anyone clarify for me? Thanks in advance.