Oxygen Sensors
Thread Starter
Staging Lane
Joined: Apr 2008
Posts: 93
Likes: 0
From: Clermont, FL
Oxygen Sensors Alright i have a dumb question. ive never changed an o2 sensor in my life. I went under the car to attempt but all of them are practically impossible to even turn and im afraid of braking something. Anyway once i do get around taking it out...then what? Do i have to disconect the cable that is connected to it too? Cause i cant see when the cable ends. These are all ittiotic newbie questions but i really wanna learn. Is there a website like install University or LS1 Howto that explains how to do this? Any help would be most appreciated.
Thanks in advance!
Thanks in advance!
Disconnect the cables and put the closed end of a wrench around the O2 sensor, and give it a good turn. Remember, they're screwed into the exhaust so the temperature is going to try and rust them in place. Use plenty of penetrating oil/pb blaster and if need be put something (a pipe) over your wrench to give you leverage. Make sure you're turning them COUNTERCLOCKWISE. Once they break loose they'll turn pretty easy.
If you've never done an O2 sensor before, you should know that if (for some reason) you put an old sensor back in the car - you MUST apply anti-seize compound to the sensor threads. (New sensors come with this compound pre-applied.) If you do not have this compound on the threads, the heat will cause the threads to "weld" to the exhaust pipe.
Thread Starter
Staging Lane
Joined: Apr 2008
Posts: 93
Likes: 0
From: Clermont, FL
Disconnect the cables and put the closed end of a wrench around the O2 sensor, and give it a good turn. Remember, they're screwed into the exhaust so the temperature is going to try and rust them in place. Use plenty of penetrating oil/pb blaster and if need be put something (a pipe) over your wrench to give you leverage. Make sure you're turning them COUNTERCLOCKWISE. Once they break loose they'll turn pretty easy.
Thank you so much!!
Thread Starter
Staging Lane
Joined: Apr 2008
Posts: 93
Likes: 0
From: Clermont, FL
Ive read bad things about the Bosch O2 sensors. But in some other threads it is mentioned and no one says anything bad about it. Should i get them?
What is it that they do that gives them such a bad rep?
What is it that they do that gives them such a bad rep?
Thread Starter
Staging Lane
Joined: Apr 2008
Posts: 93
Likes: 0
From: Clermont, FL
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Ummm, like over half the F-bodies on this site use Bosch 13111s for their O2s when they get longtubes and have no issues. I've had them for 2 years with zero problems. Go the the External Engine forum and search that forum only, just put it 13111 for the search. Most everyone will tell you the 13111 aka (stock Vette rear 02sensor) is the way to go.
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Staging Lane
Joined: Apr 2008
Posts: 93
Likes: 0
From: Clermont, FL
Ummm, like over half the F-bodies on this site use Bosch 13111s for their O2s when they get longtubes and have no issues. I've had them for 2 years with zero problems. Go the the External Engine forum and search that forum only, just put it 13111 for the search. Most everyone will tell you the 13111 aka (stock Vette rear 02sensor) is the way to go.
interesting....ill go do that now.
Thousands of members here use them. As do I. They are just like any other car part. All it takes is one or 2 people to get a bad part and all of a sudden, that part is crap....The reality is, they perform well. Take your chances
I have 111's installed on my front 2 o2s and use bosch all around for my recent swap of old 02's with no problems. I will give you some advice that I had to learn the hard way about replacing these.
1. The front 2 are a pain in the butt and will probably take a cheater bar or breaker bar to help.
2. The back 2 were not any easier.
The tools I used were an 18"x1.5 tap that I got from NAPA(i'm sure you will need this if you have factory 02's)
I bought a socket that has a slot in it from 0'reilly's (I asked for an 02 socket tool and they knew what I was talking about) that helps with not having to cut the wire on the old one in the event you need to use your car and can't get it off yet. I cut the sheathing around the wires but not the wires on the old 02s when I did mine so I could get my socket around the 02. I got anti-seize as well. It took me about 3 hours sometimes per 02 as mine were super welded together and I had to retap every thread to each 02 after removing. I used the 18" tap,a socket that fit the back of this, and a racket. I went slow and was able to rethread all just fine and the new ones threaded right in. If you get the 111's for the front I suggest zip tying them up for when you get your lt's,if you do, and keep it from being snagged. Hope this helps ,feel free to message me if you need pictures of the tools I used as well. Here are some links to what my threads looked like after removal:
http://www.fquick.com/garages/viewga...wimg&id=159480
http://www.fquick.com/garages/viewga...wimg&id=159481
1. The front 2 are a pain in the butt and will probably take a cheater bar or breaker bar to help.
2. The back 2 were not any easier.
The tools I used were an 18"x1.5 tap that I got from NAPA(i'm sure you will need this if you have factory 02's)
I bought a socket that has a slot in it from 0'reilly's (I asked for an 02 socket tool and they knew what I was talking about) that helps with not having to cut the wire on the old one in the event you need to use your car and can't get it off yet. I cut the sheathing around the wires but not the wires on the old 02s when I did mine so I could get my socket around the 02. I got anti-seize as well. It took me about 3 hours sometimes per 02 as mine were super welded together and I had to retap every thread to each 02 after removing. I used the 18" tap,a socket that fit the back of this, and a racket. I went slow and was able to rethread all just fine and the new ones threaded right in. If you get the 111's for the front I suggest zip tying them up for when you get your lt's,if you do, and keep it from being snagged. Hope this helps ,feel free to message me if you need pictures of the tools I used as well. Here are some links to what my threads looked like after removal:
http://www.fquick.com/garages/viewga...wimg&id=159480
http://www.fquick.com/garages/viewga...wimg&id=159481
Last edited by 3rdDegreeBurns; Jul 4, 2008 at 11:21 PM.
Thread Starter
Staging Lane
Joined: Apr 2008
Posts: 93
Likes: 0
From: Clermont, FL
I have 111's installed on my front 2 o2s and use bosch all around for my recent swap of old 02's with no problems. I will give you some advice that I had to learn the hard way about replacing these.
1. The front 2 are a pain in the butt and will probably take a cheater bar or breaker bar to help.
2. The back 2 were not any easier.
The tools I used were an 18"x1.5 tap that I got from NAPA(i'm sure you will need this if you have factory 02's)
I bought a socket that has a slot in it from 0'reilly's (I asked for an 02 socket tool and they knew what I was talking about) that helps with not having to cut the wire on the old one in the event you need to use your car and can't get it off yet. I cut the sheathing around the wires but not the wires on the old 02s when I did mine so I could get my socket around the 02. I got anti-seize as well. It took me about 3 hours sometimes per 02 as mine were super welded together and I had to retap every thread to each 02 after removing. I used the 18" tap,a socket that fit the back of this, and a racket. I went slow and was able to rethread all just fine and the new ones threaded right in. If you get the 111's for the front I suggest zip tying them up for when you get your lt's,if you do, and keep it from being snagged. Hope this helps ,feel free to message me if you need pictures of the tools I used as well. Here are some links to what my threads looked like after removal:
http://www.fquick.com/garages/viewga...wimg&id=159480
http://www.fquick.com/garages/viewga...wimg&id=159481
1. The front 2 are a pain in the butt and will probably take a cheater bar or breaker bar to help.
2. The back 2 were not any easier.
The tools I used were an 18"x1.5 tap that I got from NAPA(i'm sure you will need this if you have factory 02's)
I bought a socket that has a slot in it from 0'reilly's (I asked for an 02 socket tool and they knew what I was talking about) that helps with not having to cut the wire on the old one in the event you need to use your car and can't get it off yet. I cut the sheathing around the wires but not the wires on the old 02s when I did mine so I could get my socket around the 02. I got anti-seize as well. It took me about 3 hours sometimes per 02 as mine were super welded together and I had to retap every thread to each 02 after removing. I used the 18" tap,a socket that fit the back of this, and a racket. I went slow and was able to rethread all just fine and the new ones threaded right in. If you get the 111's for the front I suggest zip tying them up for when you get your lt's,if you do, and keep it from being snagged. Hope this helps ,feel free to message me if you need pictures of the tools I used as well. Here are some links to what my threads looked like after removal:
http://www.fquick.com/garages/viewga...wimg&id=159480
http://www.fquick.com/garages/viewga...wimg&id=159481
Thanks! ill stay in touch
TECH Enthusiast
Joined: Sep 2006
Posts: 573
Likes: 0
From: Burkesville,Kentucky
I've heard good things about the NTK oxygen sensors but have never used them. Right now i'm running the bosch 13111's but my tuner told me i shoulda went with the NTK's because he said they seemed to work better for him. Not sure why though.
