If 02's are so easy

[highPSI-S4]

Why the hell can't i get mine off, if it is siezed what is a good way to get it off? I'm at work out back trying to replace it before it rains. i tried a 02 sockect but it's to long, i bought the 02 wrench off ecs tuning and i can't get the right angle, i tried a cresent wrench and a pipe to get leverage and the pipe bends. couple months ago i even had a friend who is a mechinac help me and we couldn't get it.

DIY is my only choice. i'm not going to pay a shop to drop my exhaust for an 02 sensor.

any advice is greatly appreicated

[NastyNogaro]

hm.. I was able to get mine off just by putting a wrench around them and hitting the wrench with a hammer lol.. Have you tried using some PB Blaster? That's always worked wonders for me..

[highPSI-S4]

hm.. I was able to get mine off just by putting a wrench around them and hitting the wrench with a hammer lol.. Have you tried using some PB Blaster? That's always worked wonders for me..

I have a wrench but the spacing is so tight how the hell were you able to hit it with a hammer. Plus i have the SSauto DP's don't know if that makes a difference,i kinda fell like the o2's are at a wierd angle


Noob question, never used PB Blaster......Please explain

[Jung]

it's basically wd40 on roids. it ungunks shit off of bolts, makes everything easier to unscrew

[highPSI-S4]

it's basically wd40 on roids. it ungunks shit off of bolts, makes everything easier to unscrew

I believe i've seen it before, well i try it and see what happens.

Thank you both.

[mholme]

Try a crows foot with the combination of extensions, should be easy.

[sCeRaXn]

Yea id try some PB blaster or liquid wrench and just keep messing with it. I used an 02 socket and a bunch of extensions connected to a 1/2in drive breaker bar. Also make sure that the socket is seated correctly onto the 02 sensor or else youll just be battling yourself, and you could actully break the sensor. What i like to do is put the slot on the side of the socket onto the 02 wires and let them guide it down to the sensor and itll usually seat itsself correctly.

If its in there crooked(cross threaded) then you might end up having to take out the dp's to get them off. SSAC uses slim 02 bungs so its easy to cross-thread the sensor in there. If this is the case then youll probably have to get a new bung welded in. Whatever you do, make sure you put some anti-sieze on the new sensor before you install it. Good luck man.

[NastyNogaro]

I have a wrench but the spacing is so tight how the hell were you able to hit it with a hammer.

I have straight pipe piggies with relocated O2 bungs, so yea I guess it's easier for me, clearance wise. PB Blaster should do the trick for you though; spray the bolts, literally let it soak in for a couple of hours, and then get to wrenching. Be liberal with the PB Blaster.. I literally soak the bolts until they are dripping wet leaving puddles of PB Blaster in my driveway

[highPSI-S4]

I have straight pipe piggies with relocated O2 bungs, so yea I guess it's easier for me, clearance wise. PB Blaster should do the trick for you though; spray the bolts, literally let it soak in for a couple of hours, and then get to wrenching. Be liberal with the PB Blaster.. I literally soak the bolts until they are dripping wet leaving puddles of PB Blaster in my driveway

It's raining now so i'll have to wait, but i'm still at work so i might have to try it another day,

[JDM EJ1 95]

i found it essential to own some of these when doing these fuckin 02s on these cars..


go get yourself one and your worries will be gone. i fiddled with wrenches and sockets and all that jazz for like 2 hours one day.. then found one of these laying in my tool box.. tsrapped it to a ratchet and it was off in like 5 min.


crowsfoot= gangsta

[McKennaS4]

another little tip if you still cant get it to budge is to turn the car on for a few minutes to heat it up a bit. my o2 wouldnt budge until i did this. and def crowsfoot with extensions ftw.

[RolledMySTi]

Why the hell can't i get mine off, if it is siezed what is a good way to get it off? I'm at work out back trying to replace it before it rains. i tried a 02 sockect but it's to long, i bought the 02 wrench off ecs tuning and i can't get the right angle, i tried a cresent wrench and a pipe to get leverage and the pipe bends. couple months ago i even had a friend who is a mechinac help me and we couldn't get it.

DIY is my only choice. i'm not going to pay a shop to drop my exhaust for an 02 sensor.

any advice is greatly appreicated

I feel your pain. It took me hours to get the drivers side off. All I can say is lots of extensions and swearing is what it's going to take.

[highPSI-S4]

i found it essential to own some of these when doing these fuckin 02s on these cars..


go get yourself one and your worries will be gone. i fiddled with wrenches and sockets and all that jazz for like 2 hours one day.. then found one of these laying in my tool box.. tsrapped it to a ratchet and it was off in like 5 min.


crowsfoot= gangsta

Yeah that's what will get the job done, i'll have so much more room, i'll go to sears tommorrow,

[highPSI-S4]

another little tip if you still cant get it to budge is to turn the car on for a few minutes to heat it up a bit. my o2 wouldnt budge until i did this. and def crowsfoot with extensions ftw.

I've tried that before but the engine gets so hot so quick and my gloves got left outside and wah wah wah...I have issue's, but i will try with the crowsfoot

[highPSI-S4]

I feel your pain. It took me hours to get the drivers side off. All I can say is lots of extensions and swearing is what it's going to take.

i tried multiply extensions and broke 2 of them i also have a breaker bar and that didn't help either.

[Dr.Duct]

use a torch : ) lol

[The_Jerbel]

Let the penetrating oil soak in for 30 minutest at a time and keep hitting it over and over for a day or two. Then try to get it out using the crow's foot.

[davism1]

snap on sells a crows foot for O2 sensors ($38 or so) that isint open on one end and it works wonders with a long extension and try a really long ratchet to get more leverage. If you have SSAC dps you cant have that many miles on them and they shouldnt be so tight you cant budge them already unless there was no anti-sieze on them when they went in.

[highPSI-S4]

Let the penetrating oil soak in for 30 minutest at a time and keep hitting it over and over for a day or two. Then try to get it out using the crow's foot.

I'm going to try that on my day off.

[highPSI-S4]

snap on sells a crows foot for O2 sensors ($38 or so) that isint open on one end and it works wonders with a long extension and try a really long ratchet to get more leverage. If you have SSAC dps you cant have that many miles on them and they shouldnt be so tight you cant budge them already unless there was no anti-sieze on them when they went in.

Well not sure if they put anti seize of not, i had a friend do it at his shop, but i've had the DP"s for about 13.5 months now. but with all the help everyone including you has given it better come out.

[WMi_S4]

PB blast the hell out of it and make sure to tap it so the PB can soak in to the threads on the O2 sensor, i took my buddy and I almost 4+ hours to get my drivers side front O2 off, passenger side is a walk in the park w/ the airbox, maf and snorkel removed.

Crows foot is a great tool, but I found the O2 sensor kit that you can rent from autozone to be much more helpful, just make sure to use the right adapter out of the three, but start w/ PB blasting, knock it in and let it soak for 10-15 mins. and repeat this a couple times before you try at it. Also make sure you're not using 7 diff. 3 in. extensions vs. one or two 18" extensions, my buddy did this (don't know why) and ended up breaking 4 of them.....he wasn't very bright

[Bimmer2Audi]

Cover it in PB Blaster, break it loose from up top, and spin it out by hand from the bottom. If you have an AutoZone near you, rent their 02 sensor socket kit.

[ny02s4]

Greg at SSP had to drop my entire exhaust to get my passenger rear o2 sensor out. Also make sure the exhaust is warm-hot when your doing this.

[highPSI-S4]

So i tried PB Blaster, also tried the Crows foot and the exhaust was hot, also let the PB blaster sit after i blasted it thousands of times. and still no budge.
I really don't want to pay a shop to drop my exhaust just to change a o2 sensor. But it's my primary and the car runs bad.
What to do now?

[tike0rz]

So i tried PB Blaster, also tried the Crows foot and the exhaust was hot, also let the PB blaster sit after i blasted it thousands of times. and still no budge.
I really don't want to pay a shop to drop my exhaust just to change a o2 sensor. But it's my primary and the car runs bad.
What to do now?

Seriously? Take it to a shop. If the conventional methods don't work, then there isn't much else you can do yourself. Also why are they so hard to get off? Lack of anti-seize during install? Do you live near salt water? Are they rusted or just really tight? If so, use breaker bars and hang on that shit...lol.

Just take it to a shop, pay an hour or so of labor, and sleep at night.

[highPSI-S4]

Shops around my area are all about money. i haven't called called for a qoute yet but i'm betting it'll cost me atleast 500.00 to drop the exhaust and change my o2.
Someone also mentioned the shop that installed might have cross threaded the sensor putting it in.

[Rajan147]

heat it up, if you can get the car high enough or have access to a lift, give it a blast with a torch. This should give you plenty of expansion. This can be dangerous if you dont have easy access.

If not, drive the car around, get it hot then pb blaster the shit out of it, then crank it with a breaker and a 02 socket.

Good luck man, and be damned those sons of bitches who cross threaded your 02 sensor!!!

[The_Jerbel]

Or if it comes down to it, you can just drop your exhaust your self...

[Das General]

They make an attachment that is specifically for O2 housings and things of that nature. It basically locks right in once you pull it over the wiring...and BAM, they are out. You just gotta use a little muscle. It also helps having them be pulled out before.

[ThirdStrike]

did anyone mention putting a little anti-seize before putting them back so this doesnt happen again?

[highPSI-S4]

^^^ someone did mention that. My supervisor at work said if i bring in my tools he'll help me while we're at work. So if we can't get it then i'll just have to spend some cash and get it done.

[Daft]

So i tried PB Blaster, also tried the Crows foot and the exhaust was hot, also let the PB blaster sit after i blasted it thousands of times. and still no budge.
I really don't want to pay a shop to drop my exhaust just to change a o2 sensor. But it's my primary and the car runs bad.
What to do now?

Did you ever try to tighten it a little before trying to remove it?

Sometimes, if you put a little tightening pressure on it first, it will break the rust that his keeping it stuck. If it does budge in the forward turn, get more PB into the threads and let it sit for a few more mins before trying to go backwards again.

[purchasers4]

I had a rear 02 sensor that despite soaking, beating, dremmelling, etc, would not come out. You may have to cut it out, weld in a new bung, and screw your new 02 into the new bung. 02's should be easy, if it does not come out after hitting it with PB blaster a few times and trying for ~30 minutes, it may be hopeless.

[damnthemansam]

why dont you cut the old wires off at the top and put a deep socket on there**


















**im not liable if you cut the wires and your car doesnt run and the sockets not deep enough or doesnt fit..

[highPSI-S4]

[QUOTE=damnthemansam;2612785]why dont you cut the old wires off at the top and put a deep socket on there**



LOL, the position of my o2 due to the SSAuto DP's in very close to the firewall and a deep socket doesn't fit, i tried it . The socket will fit but there's only so much room left and you cant get any leverage cause the rachet/breaker bar barelly fit

[highPSI-S4]

O.K. so i finally got it out. i cut the wires and went and bought a 22mm deep socket, used all 1/2 ext. and breaker bar and it came out. It stripped out the first two rows of threads. Luckly someone at work had a tap and dye set, so we tried are best to rethread it. Took awhile(4 hours total) in the heat but i was able to finally get that sucker in.


Thank you guys for your help and input

[OldYella]

After all this mess did you relocate the O2 bungs? If you had to do it again would you do it? Looking at grabbing the exhaust and want to get all this stuff out of the way before initial install. Sorry for raising thread from the dead.

[highPSI-S4]

After all this mess did you relocate the O2 bungs? If you had to do it again would you do it? Looking at grabbing the exhaust and want to get all this stuff out of the way before initial install. Sorry for raising thread from the dead.

I did not relocate the bung, that 02 was the only o2 the wasn't new or kinda new. At the time and for the price i needed my car fixed so it is what it is. If i had the money i would've bought some ASP downpipes, there's alot of people you wouldn't buy them(ss auto) and those that have and say good things about them. One thing i don't know is,.... once all those o2's are installed and it's however many miles later will the o2's seize up in the bung like mine did. Mine were either installed wrong/crossthreaded or the heat and thin cheap metal melted and seized the threads to the o2.
Alhough i bought those cause i needed my car fixed and had no money... it would be good and helpful to support are community and it's advertizers


Hope that helps in your decision .

[OldYella]

Im prolly going to go ahead and buy the SSAC setup this Christmas. I cant really afford bling bling downpipes or a catback for that matter. I plan on doctoring up the exhaust to make it last. $1000 for most other cars buys a decent exhaust setup (complete exhaust). The S4 community has some crazy prices in this department.

[Dowskeet]

Vast "piggie downpipes" or the DIY version..