Oxygen Sensor help........

[exp500]

No research, cheap results. My understanding is the timer on the control loop activates after about one minute of out of range difference. O2 sensor, not EGT sensor. (still must be warm to work).Exiending the time would probably fix. Programming I havn't looked at yet. Never tried on rears programmed out.
There are many choices for extenders/Bungs/non foulers. Heres one.
Top Quality M18x1.5 O2 Oxygen Sensor Extender Spacer Car CEL Fix Check Engine Light Eliminator Adapter Stainless Steel New Brand|Exhaust Gas Oxygen Sensor| - AliExpress
Amazon.com: Dorman 42002 Spark Plug Non-Foulers - 18mm Tapered Seat for Select Models, 2 Pack: Automotive

 

[Rocket Man]

Sounds like snake oil to me. Never heard of these “extenders”.

 

[exp500]

RocketMan- thats what I thought too when I first heard it. Seems the Ferd guys were pretty aware of it from stang converter deletes. I guess some were putting resistors inline to show different results too. But using as a fuel trim on our series, and to shut off the light, it works about 1/2 the time.
Cheap and works are pretty high on my list. I'm trying to keep a fleet of old Hi mile work trucks on the road reliably and safely.

 

[Fless]

Here's an example:

 

[Rocket Man]

Here's an example:

Isn’t the system telling you that the sensor is bad? You can run longtubes with no cats and tune the downstream sensors out. The upstream sensors need to be working right in order for the pcm to adjust mixture. If the op is having issues with his upstream sensors my suggestion would be to buy quality parts not the store brand. They should work fine. If not there’s an issue that needs to be fixed not band-aid fixed. My downstream sensors are tuned out, my upstream ACDelco ones work fine.

 

[Rocket Man]

Here's an example:

He even says you should fix your car and not do what he’s doing if you can afford to. This is for a downstream sensor and it’s telling him he needs a new cat.

 

[Fless]

He even says you should fix your car and not do what he’s doing if you can afford to. This is for a downstream sensor and it’s telling him he needs a new cat.

Agree completely. It's just a band-aid.

 

[exp500]

You still need a working upstream sensor. My first post above said Denso. And later spoke of error code timing. Just tryin to help- He's gonna do what he wants. Jeez....

 

[MN-TAHOE]

Isn’t the system telling you that the sensor is bad? You can run longtubes with no cats and tune the downstream sensors out. The upstream sensors need to be working right in order for the pcm to adjust mixture. If the op is having issues with his upstream sensors my suggestion would be to buy quality parts not the store brand. They should work fine. If not there’s an issue that needs to be fixed not band-aid fixed. My downstream sensors are tuned out, my upstream ACDelco ones work fine.

 

[MN-TAHOE]

The O2 sensor seems to be always the "default" code for all issues so I replace the O2 sensor then the other one goes out. Apparently the 5.7 Litre has 4 O2 sensor's so what-replace them all or ignor?