O2 sensor question

[RedGalant]

My engine light showed the code P0141 which is the O2 sensor on Bank #1, Sensor #2. For some reason, I am having a REALLY tough time getting the sensor loose. Any tips on how to get it out? I've tried a torque wrench, WD-40, and even to the extent of an impact gun. Please help.

[DryBear]

Have you tried PB Blaster? Soak some on the threads and let it sit for a while, then try it. If it still doesn't budge, add some more PB Blaster, let it sit for a bit again, then try.

Are you using an O2 sensor socket? Have you tried a breaker bar, or a piece of pipe to extend the wrench for more leverage?

By the way, do not use a torque wrench to loosen stuff, as it will knock it out of calibration.

[RedGalant]

Yes, I've been using an O2 sensor socket. I just went to the store to get some PB blaster, so I'll let you know how it goes.

I actually went to a mechanic I know today to try and take it off. He used some PB blaster a few times, and actually broke his O2 sensor socket. He just said he needed a few more hours to get it done, so I'll just try it myself again before bringing it to him as a last resort.

[seth98esT]

A breaker bar is your friend.

[Serstylz2]

I went thru the same thing when trying to install my strut bar...

[nygalant2001]

this code just p0141 just came up in my galant. Where exactly is this sensor? Pics would be great if possible
thanks in advance

[pinoyesv6]

its under the car.

if you look at the engine from under the hood at both bank 1 and 2, you'll the their #1 sensors.

if you look from under the car, the first ones you'll see is the #2 sensors.

[bronxbombr]

A breaker bar is your friend.



YES AND A SMALL TORCH TOO

[Gtsnapper]

I had this problem today removing the pre-cat, bank #1 O2 sensor, I used some WD40 and quite a bit of force with the breaker bar, eventually it came undone.

My real problem though, is threading the new one back in. I've spent quite a while trying to do this, but it wont engage. I had a search around the internet, and found recommendations to heat up the threaded collar with a hand torch, is this a good idea? <Edit> after more searching I found a mini torch for sale at Autozone (link below) would this do the job? advice/tips appreciated. Thank you.

http://www.autozone.com/autozone/catalog/accessories/accProductDetails.jsp?counter=26&categoryDisplayName=&fromString=&itemIdentifier=238730_0_0_&productId=238730&sortType=&parentId=6-10&filterByKeyWord=&categoryNValue=&navValue=100340&fromWhere=&itemId=340-10&displayName=Mini+torch&store=830&skuDisplayName=Mini+torch&brandName=Motormite

[ezekiel.glnt]

Damm... i thought i was the only 1 who had this prob, i used pb blaster and let it sit a whole day to get it loose.

[SleekGTZ]

My o2 sensor (after cat) also needs to be replaced. Darn it, I hate going under the car during this cold season.

[Ruslik]

i removed mine after driving for a lil
22 or 21 mm ranch and a lil hit with a hammer and it came out perfectly