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  #1  
Old 10-31-2006, 04:37 AM
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Removing O2 sensors

Ok, got the car jacked, crawled under, sprayed some WD40, but man I can't get the O2 sensors loose. I have a 22mm crow's foot but I'm kinda having a hard time anyways. Is there a better tool? or better method??
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  #2  
Old 10-31-2006, 05:16 AM
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You can use an open end wrench or a special socket for O2 sensor removal.
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  #3  
Old 10-31-2006, 06:22 AM
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Did anyone have a problem wtih the heat shields getting in the way?
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  #4  
Old 10-31-2006, 09:38 AM
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I can fit the crow's foot in there but with hardly any room due to the heat shields...I do not want to remove them.
Is it possible the sensor could break if I hit the old one with a hammer? I could then put a socket on it that way. I could try an open ended wrench...not sure I have the size though.
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Old 10-31-2006, 11:49 AM
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You could break the threads inside if you use a hammer, then you'll have more problems. You could also crack the exhaust pipe. Check out; http://svx-iw.com/svxiw/article/?category=exhaust
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  #6  
Old 10-31-2006, 11:51 AM
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Yeah I see what you are saying....that's the last thing I want to do is strip threads or break the pipe.
Well I'll give it another go tonight....maybe 2nd time is a charm.
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  #7  
Old 10-31-2006, 12:03 PM
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Use a better penetrating oil like PB Blaster. Soak it down and let it sit for a couple of hours, preferably overnight.
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  #8  
Old 10-31-2006, 01:25 PM
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I used to have that stuff...can't find it though...although my father should have a ton of it. That's some good stuff.....
I may try heating the area too if I need to.
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  #9  
Old 10-31-2006, 04:35 PM
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Don't waste your time with WD-40. PB Blaster is Da Bomb!!!
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  #10  
Old 10-31-2006, 04:52 PM
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After a good soaking with any kind of penetrating oil, wipe off excess, run eng to full operating temp, try again. Might help to give it a pull in the tightening direction then try loosening.
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  #11  
Old 10-31-2006, 05:49 PM
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if u r replacing the sensors anyway.........why not just cut them off flush and drill a new hole in the pipe and then weld on the appropriate size nut to take the sensor?


forgive my ignorance....i'm new!!

but i've seen that done all the time...usually cheaper/easier than messing with the original sensor.....
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  #12  
Old 10-31-2006, 05:54 PM
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I agree with using a good lubricant and then run the engine to operating temp, Then try getting them loose. If that doesn't work, See if you can rent an O2 socket from autozone or advance. Good luck and see you saturday.
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  #13  
Old 11-01-2006, 04:51 AM
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Hey after borrowing a 7/8" open end wrench from work, I got back home and was able to free up the old ones....The WD-40 did work as I sprayed them down two days ago.
The problem I had was trying to get the friggin connection loose where they plug in...I strained my lower back to pry apart the passenger side connection...and damn that driver's side one....Too difficult to get to so I was laying under the car and I snipped the wires from the end of the sensor by the exhaust, then I grabbed them with one hand while I stuck a screwdriver onto the electrical prong....and after a bunch of swearing, I tugged it loose!!

So now I tightened down the new sensors and plugged them in.

Questions:
All that's left is to reset the code...but I have a question first. I never disconnected the battery to do this job. Is it necessary??
And when I reset the code, should I start the car and run it first? or Reset the code, then start the car?

Jason, I'm sorry but I'll be in Indiana counting inventory all weekend Fri-Sun...for our companies dist. warehouse. It would have been cool to be there.
After that I'm stopping in Columbus for my gf's birthday on the way home.
Hey take plenty of pics please.
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  #14  
Old 11-01-2006, 07:12 AM
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Did you add ant-sieze to the threads before installation? This helps for future removal.
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  #15  
Old 11-01-2006, 07:38 AM
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The new plugs already had the anti-seize on the threads.
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