evo ix mr o2 sensor
Which o2 are you trying to remove? I just did my front one on the o2 housing and barley got it off. I had to unhook the wire and feed it through the closed end of a 7/8" wrench. You could also get a o2 socket but I think they can get pricey.
best way to do this is to turn on the car for a little bit then turn it off let it cool down a little not much if the housing is a little hot it will come out easier. also get a o2 sensor socket they aren't expensive at all. i think its like 10 bucks at oreillys and you can even rent one and as long as u take it back within 48 yours you get a full refund
I second getting things a bit warm, not hot, and also using something like PB Blaster. Do not use a torch directly on the sensor-- it will hurt it I have something called AeroKroil that works a bit better than PB and another one that is even better that I cannot remember the name of. If you are doing this on the bench and have access to an oxy acetylene torch to heat the housing only..... that can also help but you would need to be super careful.
I also suggest using a normal box wrench on the end of a wrench of the right size. I always go for the 22mm. Any O2 socket of any nature works only when it wants to come out. In this case, you need something to get it off without killing it. If you have already mangled the hex flats on the sensor, you can also use a decent sized pipe wrench.... the harder you pull... the tighter it grips. If you can get it to back off a bit, spray it, do it again, repeat...
Once you get it completely off and if the threads are wrecked... do not stress. Take some time with a small file and clean them up. You will usually get enough cleaned up to make it work.
If it is a total loss... well, you'll need a new sensor. PM me as I do have a spare OEM sensor that has perfect threads.
Technical10
I also suggest using a normal box wrench on the end of a wrench of the right size. I always go for the 22mm. Any O2 socket of any nature works only when it wants to come out. In this case, you need something to get it off without killing it. If you have already mangled the hex flats on the sensor, you can also use a decent sized pipe wrench.... the harder you pull... the tighter it grips. If you can get it to back off a bit, spray it, do it again, repeat...
Once you get it completely off and if the threads are wrecked... do not stress. Take some time with a small file and clean them up. You will usually get enough cleaned up to make it work.
If it is a total loss... well, you'll need a new sensor. PM me as I do have a spare OEM sensor that has perfect threads.
Technical10
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FS[Northeast]: OEM Front O2 sensor
fugiwara
For Sale/WTB - Engine / Drivetrain / Power
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Jun 10, 2014 10:46 AM







