What are you using to remove an 02 Sensor from a E34 BMW?

[Vinko]

I know they've got the special 02 socket but before I set aside some time on a weekend to get this done, anyone have luck with maybe a crowfoot 22mm instead? If so, particular type? Looks like I'm going to need some teeth on it -- don't know what it's called but kind of a mix of a flare wrench and a crowsfoot might do the job of the specialized socket.

Or will just a good thin 22mm open end wrench do it as well?

Thanks for the help

 

[otis66]

If you are trying to remove the 02 sensor just cut the wires off the sensor and use a deep 22mm socket. If the socket is not deep enough just cut the sensor down until it works. Looking at ehe EM34 BMW sensor I would say just cut the wires off the top of the sensor and use a deep 22mm socket or the box end of a combo wrench. I use my 15" 1/2 drive ratchet for jobs like this.

 

[fourtythree]

Sometimes the O2 will be recessed and you wont be able to get a combo or flare nut wrench on it and need the actual O2 socket, unless you're not re-using the sensor and can cut the wires. The O2 sockets/wrenches work quite well.

 

[bcradio]

Sometimes the O2 will be recessed and you wont be able to get a combo or flare nut wrench on it and need the actual O2 socket, unless you're not re-using the sensor and can cut the wires. The O2 sockets/wrenches work quite well.

Harbor freight has a decent O2 kit also... Just use a 20% coupon

 

[jjjrmx5]

Harbor freight has a decent O2 kit also... Just use a 20% coupon

^^^^
I agree.

Both OEM brand tools (found at most auto stores) and even Lisle makes a set too in a blow molded case that are quite acceptable.

Also keep in mind the set also comes into use when changing out fronst struts that have a hex recess to hold the shaft as the O2 wrenches are great for tightening up the big bolt with access to the top hex without blasting it with an impact.

If too cheap, as mentioned above, cut the wires and use a deep impact socket. Most I do also require heating up the sensor at the threads/bung with MAPP gas as then tend to be in there pretty good due to the heat of the cat. converter and downpipe. (cut wires only if replacing, of course-if just removing, I suggest the O2 wrench))

Again, right tool for the right job makes things go smooth and easy.

 

[Skyline]

I've found those slotted chrome O2 sensor sockets to be worthless. These sensors can sometimes take a lot of force to remove, even with heat. I like the mid depth crowfoot impact sockets. You can hammer on the tab to break it loose. A little heat from a torch, and a bit of hammering, and they all come out.

 

[smogtech]

never removed one from a bmw like that before.
http://www.tooltopia.com/kd-tools-3925.aspx

I've used that to change 2 on a lt1 transam. worked out well.

 

[bgott]

I just bought one like that from S-O for $50 or so. I spent that because I've blown out a few of the cheap ones. It's a Blue-Point so it is probably made in the same factory as that K-D.

 

[MattPersman]

never removed one from a bmw like that before.
http://www.tooltopia.com/kd-tools-3925.aspx

I've used that to change 2 on a lt1 transam. worked out well.

wow what a great price. I have the snap on version of that and its great but much more costly

 

[cj7365]

you can "rent" an O2 sensor from Orielly or AutoZone

 

[CJKaz]

22mm stubby box wrench if it's in a tough spot. Heat bung as mentioned & hit the wrench with a small sledge hammer. Works every time. Heat is the key, get a MAPP torch as opposed to propane. Good luck, they can be a real pain in the a$$.

 

[Guns R Tools]

Not to hijack the thread, but what does E34 stand for? Silly question ?????????

http://www.usautoparts.net/bmw/repairs/codes/vehicles.htm