O2 sensor wrench/socket

[ajchien]

DIYer here looking for a recommendation for a O2 sensor wrench/socket for a Honda CRV second generation (2003)

I see multiple different variants of these tools... I hope you guys know what I'm talking about...
1) Deep socket with slot on the side type
2) modified looks like a combo socket-flare nut-crowfoot wrench type
3) modified socket-flare nut on the end of a flex breaker bar type

Which one do you think would be easiest to use for my car?

 

[franzdom]

Each application can differ, though I was unable to use the ones that are crowfoot style and had to use the slot on the last car I did. If you have the room above the deep socket type you really can't go wrong with that. The threads were bunged up though and I had to go back and get a lisle thread restorer, what a job that ended up being. The threads were so tight in the manifold that the chaser almost didn't work, and I used so much WD-40 that I was getting codes for the first minute or two running the car afterwards, it was kind of touch and go.

 

[Brian_B_]

if you just replacing..dont buy a tool. Rent one from the parts store you get the sensor from. Its free rental..sort of. You pay more up front for it, but you get the money back when you return it.

 

[Skin]

DIYer here looking for a recommendation for a O2 sensor wrench/socket for a Honda CRV second generation (2003)

I see multiple different variants of these tools... I hope you guys know what I'm talking about...
1) Deep socket with slot on the side type
2) modified looks like a combo socket-flare nut-crowfoot wrench type
3) modified socket-flare nut on the end of a flex breaker bar type

Which one do you think would be easiest to use for my car?

None if you're replacing it. Just cut the wire and use a deep socket. Denso is the manufacturer of Honda sensors as well if you want to save some cash. I think they're $250 from Honda, substantially cheaper from Denso.

Part numbers are 234-9005 for Upstream (sensor 1)
234-4125 for down stream (sensor 2).

In my experience its the former that seems to go bad.

 

[G1GRANDEUR]

On 03 CRV O2 sensor is mounted on the side, unlike other models(on top).

spray wd-40 or other lube and let it sit for 15-20 mins. Then you should able use wrench to take it off.

And yes, buy Denso from local part store.

 

[87FoRunner]

I bought my snap on from ebay for about $30 shipped. Worth every penny and the one from autozone was almost as much.

 

[Bill R.]

I have a half dozen of them but my favorite is the lisle one that you use with an air chisel gun. As far as wd40 goes, you can spray all the penetrant you want and it won't go beyond the seal washer used on 02 sensors unless you loosen it at least an 1/8 first just like ford sparkplugs.

 

[balane]

This is the style I use most often.

 

[wafrederick]

Heating them up with a torch first works too.Sometimes the threads in the bung get messed up,have to run an 18mm x 1.50 tap down the bung to clean the threads up.if the oxygen sensor is bad,cut the wires off and use a good 6 point deepwell socket on a breaker bar or long handled ratchet.

 

[Toolhorder]

The service manual calls for Snap On YA8875 which superseded to SWR2 or SP tools 93750

 

[G1GRANDEUR]

Like I said, no need to spend money if you are going to replace very rarely.

So much space after removing heat shield, use box end after cut the wire. It does not need to be super tight.

 

[nato]

Check your local Autozone (if available), they're in-house brand OEM makes a 3 piece service set for CHEAP...lifetime warranty also!!!! I use this greatly in my shop and they 100% always do the trick.

http://www.autozone.com/autozone/ac...ket-wrench-set/_/N-255s?itemIdentifier=272729

 

[Vvmvbb]

This is the style I use most often.

Yeah, I like that one best too.
You might want to drive the car just ahead of cracking it loose if it's stuck to heat it up (careful, though - wear gloves).

 

[MR_T]

Yeah, I like that one best too.
You might want to drive the car just ahead of cracking it loose if it's stuck to heat it up (careful, though - wear gloves).

That's the one I have and its worth every penny. Just warm up the car, put on some gloves and your good to go.

 

[HaroRider]

I think it matters which one your replacing if its recessed in the heat sheild of the cta you will need the deep one.

I picked up a whole set from Astro Pnumatic for $25 on CL.

 

[bran1har]

Harbor freight has the regular deep socket and the crow foot version. I have the deep one. It cost about $7, works good, I don't use it often so I don't know about its durability.

 

[fsdogwood]

Just get the free loaner from either AZ or AdvanceAuto

I borrowed the one from AZ for my 03 CRV

 

[fsdogwood]

if you just replacing..dont buy a tool. Rent one from the parts store you get the sensor from. Its free rental..sort of. You pay more up front for it, but you get the money back when you return it.

Get the Denso (is the typing correct?) from Amazon, and you can still
free rent the O2 sensor tool from AZ or AdvanceAuto. Did just that
couple of months ago

 

[Mike662]

This is the style I use most often.

Same here. Just a DIYer, if I was a pro I'd probably get one of each, but this version has worked for me on 3-4 different vehicles.

 

[Squankum]

So much space after removing heat shield, use box end after cut the wire.

Heck, you may not even need to cut the wire. On my Bosch 02 sensor, I've found that with a little bit of finagling, I can slip the connector on the other end of the wire through the wrench's box end, and use that.

OTOH, the fabricator who built my cat put the sensor in a weird spot, so the box end of the combination wrench I use is... on a cheap Great Neck combination wrench I bought at AutoBone, and then I had a friend bend it with a torch, for access.

Judging by the pic here, yeah, remove your heat shield, use a box end wrench if you can. Maybe you don't even need a special tool?

 

[Skin]

OP's location is LA so he might be okay but in my area i would not suggest touching the heat shield bolts, thats if the thing is even still there. Again, if replacing snip the wire and use a deep socket, nothing to remove, very simple.