P0420 wont leave me alone.. (1 Viewer)

[GXO]

Yup, I was using one of those slotted O2 sensor sockets. As to strong arm power, I did have my coffee and Wheaties before I crawled under the GX lol. What I saw in some YouTube videos since was some suggestions to put a hose clamp around the socket to prevent the slot from expanding during torquing and thus slipping. Will also try using a hammer on the breaker bar as most have suggested instead of the tugging' method.

the hose clamp idea is an interesting one and probably does help. I got mad and cut it off and slid an impact up in there and it buzzed right off haha

 

[StrongIslandGX]

We did it! Got the driver side O2 sensor off today: hammer, warmed up, and a hose clamp around the slotted wrench, and 2 bowls of Wheaties before starting work. Got the spacer on. Crossing my fingers and hoping that the codes don't come back... Thank you everyone with the help and suggestions!!

 

[StrongIslandGX]

*update*
I put about 400 miles on my GX after installing a pair of spacers and no CEL have come up. Just passed state safety inspection. So far so good!

 

[Rednexus]

How well did your 5th gen T4R catback fit? Considering a Borla 5th gen catback for my GX.

 

[StrongIslandGX]

How well did your 5th gen T4R catback fit? Considering a Borla 5th gen catback for my GX.

I think you got the wrong guy... I wish I did do something with my exhaust though! I installed the O2 spacers.

 

[Rednexus]

My bad! Must have confused you with one of the other NYC-area forum members

 

[CharlieChops]

Bumping this thread to see if anyone has a recent source for the 90 degree o2 sensor spacer.

 

[Rednexus]

Most of the Amazon ones have been removed. It seems that the main source of them now will be directly from overseas, any remaining domestic sources are likely to get shut down due to increased enforcement.

This one looks very similar to the two that I purchased on Amazon in 2021 (which are still working great). Buy at your own risk.

90° O2 Oxygen Sensor Spacer Engine Light CEL Check Bung Mini Catalytic Converter Generic

Why do you need to replace the oxygen sensor? 1.A worn-out oxygen sensor can cause excessive gasoline consumption, elevated exhaust emissions, accelerated catalytic converter damage failures, and cause engine performance problems.2.If your state has vehicle inspection programs to regulate...

jcarpart.com

 

[bgilly]

I used two of these O2 Simulator Straight Cel Fix stainless steel oxygen sensor simulator. - http://www.bigdaddiesgarage.com/straight-cel-fix.html along with OEM Denso sensors and my p0420 and p0430 codes are gone. Finally, after about 1.5 years of trying random fixes and trying to avoid the cost of new cats.

 

[jzdogazzz]

I used two of these O2 Simulator Straight Cel Fix stainless steel oxygen sensor simulator. - http://www.bigdaddiesgarage.com/straight-cel-fix.html along with OEM Denso sensors and my p0420 and p0430 codes are gone. Finally, after about 1.5 years of trying random fixes and trying to avoid the cost of new cats.

I'm about to give this a shot. Don't think I can hold out for 2 more years waiting on Texas to drop emissions..