Let me tell you what I did, PB Blaster when i came home from work let it sit over nite, next day repeat, then the third day after car was driven and warm sprayed and sit for a few more hours, took a 7/8" open wrench or 22mm i believe and you can open it. If you spray it once and expect it to come out, it may be hard, you need to give it some soaking and some capillary action to work. No need to buy special oxygen tool, i did this for the passenger side pre cat...and post cat I had to remove that rubber cylinder with two bolts holding it to get access.
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Originally Posted by TheKingSim0n
Is it really that simple? Can someone point me towards a D.I.Y post please? I always figured the O2 Sensors were hard replace for some reason.
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