Phaedras Posted January 17, 2005 Share Posted January 17, 2005 My sensor seems to have been in quite a while, how would I best go about in loosening it up? Besides that, there seems no way to get a wrench around the hex-shaped part of the sensor. Does one usually use pliers instead? My sensor is the type stuck in the first catalytic converter. Quote Link to comment Share on other sites More sharing options...
idosubaru Posted January 17, 2005 Share Posted January 17, 2005 can you get a wrench in there? that's what i always use. dropping the exhaust may give you more room to work with. you could use a torch around the catalytic converter if you've done that before and know how to do it. torch the threaded area around the O2 sensor but not the sensor itself. then try to break it loose. or spray the O2 sensor down with liquid wrench a couple days in a row. Quote Link to comment Share on other sites More sharing options...
subiekid Posted January 17, 2005 Share Posted January 17, 2005 I would invest in a o2 sensor socket, they are 1/2in drive and work like a breeze. I used to fight with them but now all I will use is a o2 sensor socket. It also gives you an excuse to add another tool to your collection! Scott Quote Link to comment Share on other sites More sharing options...
idosubaru Posted January 17, 2005 Share Posted January 17, 2005 O2 sensor socket i bought does not work on my AWD XT6, not nearly enough room between the sensor and front diff. vehicle dependent. Quote Link to comment Share on other sites More sharing options...
BLACKSTONE Posted January 18, 2005 Share Posted January 18, 2005 I remove O2 sensors all day (being in the exhaust bizz). I have strong faith in the 02socket system. If ever you cant get a box end on there, pop on the handy 02 socket, grab your wratchet and your good to go. Works like a champ on my 96 imprez, which problibly has the same setup as what your talking about. Quote Link to comment Share on other sites More sharing options...
Phaedras Posted January 18, 2005 Author Share Posted January 18, 2005 The socket I got looked like it meant business, but sadly the clearance between the cat and the differential is too narrow to fit the socket, even less the socket and wrench assembly. :-( http://www.ultimatesubaru.org/photos/showphoto.php?photo=3909&size=big&sort=1&cat=500 This shows what i'm talking about. I've also now disconnected the sensor and my car doesnt seem to give a damn. No CEL, nothing. Not that I always want to be running around with an ultra-rich fuel mix... Quote Link to comment Share on other sites More sharing options...
MilesFox Posted January 18, 2005 Share Posted January 18, 2005 the socket has a hex on the top so if a ratchet doesnt work, you can fit either its a 1" oe 13/16" open or box wrench Quote Link to comment Share on other sites More sharing options...
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