1-3-2-4 Posted September 4, 2009 Share Posted September 4, 2009 Replaced my headers today however does anyone know what size socket is needed to take the Oxygen sensor out? Link to comment Share on other sites More sharing options...
idosubaru Posted September 4, 2009 Share Posted September 4, 2009 24mm. you can double check by testing the new one you buy to replace it at the auto parts store. Link to comment Share on other sites More sharing options...
1-3-2-4 Posted September 4, 2009 Author Share Posted September 4, 2009 I hear they have a special removal tool for the sensor? I'm sure advance auto or auto zone has it? Link to comment Share on other sites More sharing options...
idosubaru Posted September 4, 2009 Share Posted September 4, 2009 no special tool is needed, just a wrench has worked on all the EA, ER, and EJ motors i've ever done. it's tight on some, but i've always been able to get them all. you unplug it first, then thread the wire/connector through the wrench to get it on the 6 points of the sensor. the special tool is a socket that can work with the wire on it, has a slot in the side. no need for that though and i find the wrench more maneuverable in tight places/clearances. Link to comment Share on other sites More sharing options...
1-3-2-4 Posted September 4, 2009 Author Share Posted September 4, 2009 no special tool is needed, just a wrench has worked on all the EA, ER, and EJ motors i've ever done. it's tight on some, but i've always been able to get them all. you unplug it first, then thread the wire/connector through the wrench to get it on the 6 points of the sensor. the special tool is a socket that can work with the wire on it, has a slot in the side. no need for that though and i find the wrench more maneuverable in tight places/clearances. odd I tried a 22 mm socket I had but the white connector would not fit but I don't understand how you could take the Oxy Sensor off without pinching the wires Link to comment Share on other sites More sharing options...
Olnick Posted September 4, 2009 Share Posted September 4, 2009 (edited) Actually it's 22mm. The removal tool is usually 7/8" but it should work. Sorry, missed the earlier responses. Socket wrench won't work, you need a 22mm box wrench (The connector does fit through, right?) or open end wrench. Edited September 4, 2009 by Olnick Late! Link to comment Share on other sites More sharing options...
Fairtax4me Posted September 4, 2009 Share Posted September 4, 2009 Little tip. Change the sensor with the exhaust system hot. Wear gloves. Hot metal expands, the hole that the sensor screws into will expand more than the threads of the sensor and it makes it easier to remove. Link to comment Share on other sites More sharing options...
1-3-2-4 Posted September 4, 2009 Author Share Posted September 4, 2009 Little tip. Change the sensor with the exhaust system hot. Wear gloves. Hot metal expands, the hole that the sensor screws into will expand more than the threads of the sensor and it makes it easier to remove. trust me I did.. I have a nice burn mark on my wrist.. I learned the hard way that the cat stays hotter longer then the rest Link to comment Share on other sites More sharing options...
unibrook Posted September 4, 2009 Share Posted September 4, 2009 I used a closed end wrench on mine. I knew the O2 sensor was bad, and that I was def going to replace it....so I just clipped the wires and slide the closed end of the wrench over the wires. Link to comment Share on other sites More sharing options...
davebugs Posted September 4, 2009 Share Posted September 4, 2009 I always use a 7/8 box end wrench. Since the old one is always rusty - and I wouldn't want to end up using a pipe wrench. It's easier to keep it "true" when hitting it with the hammer which is often needed. I also usually use Liquid Wrench instead of PB Blaster to soak the sensor down preferable when warm a time or two before attempting removal. Liek hours before. Tehn hit it with PB immediately before removal. I also ALWYAS anti-seize the new one with the highest temp anti-seize that I can find. Link to comment Share on other sites More sharing options...
1-3-2-4 Posted November 23, 2010 Author Share Posted November 23, 2010 Anyone have the pinout for the oxygen sensor? I think the sensor is ready to say times up! I wanna put my scope to the sensor. Link to comment Share on other sites More sharing options...
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