alright guys i apologize for hijacking this thread for my own purpose but i went out and got an Actron CP9125 pocket scanner for my truck. when i plugged it in lo and behold it was the P0420 still, so i erased it and fired up engine no light but i only ran it about 5 seconds and did not drive (just wanted to see if light would go out) i will take her for a spin once i get some juice in her and report back but hopefully this worked

 

light still out i think it worked

 

:tup:

 

I seem to be one of the few that this fix doesn't work for. When I monitor the O2 sensor with my scan tool it shows a steady .440V ALWAYS. The voltage never changes. What should I look for next? 1996 Chevy S-10 2.2l Still have the P0140 code. I have 12V from the heater circuit and a new (twice) O2 sensor.

D

 

This trick will NEVER work for a p0140 code, it will only work for a p0420 code. (failure of the cat, not the o2 sensor heater)

Check your o2 sensor grounds

The PCM is trying to find ground through the O2 and the exhaust system for that Tan/White wire. It is also OK to splice into the Tan/White wire hook it to a chassis ground and leave it that way.

 

This trick will NEVER work for a p0140 code, it will only work for a p0420 code. (failure of the cat, not the o2 sensor heater)

Check your o2 sensor grounds

The PCM is trying to find ground through the O2 and the exhaust system for that Tan/White wire. It is also OK to splice into the Tan/White wire hook it to a chassis ground and leave it that way.

I assume the sensor POSITIVE wire is ok but I need to ground the tan/white wire? I hope it's that easy. I'll check if the sensor and wire are grounded. Thanks.

D

 

2 days light still out

 

yes, its that easy

 

did the o2 sensor-spark plug non-fouler mod today, so far so good. Drove about 25 miles-no SES light.

 

ok im new here I had a 02 s10 2.2 flex fuel will this work on it
and do I dill the non fouler all the way thru or what and do I need 2 non foulers or one. I want to just runn pipe and a cherry bomb

 

^^^ i used 2 non foulers on my 2000 2.2 flex fuel.i had to drill the one all the way through.had to drill it out to 9/16 to get my o2 sensor to thread all the way in.then the other non fouler was just used as a spacer to get the o2 sensor far enough out of the path of exhaust gasses.

 

Don't mean to bring this post up again but will this work as well instead of using the foulers?, or should I just stick with the folders?

http://www.gbodyparts.com/product_info.php?cPath=47_240_242_249&products_id=1798

 

Don't mean to bring this post up again but will this work as well instead of using the foulers?, or should I just stick with the folders?

http://www.gbodyparts.com/product_info.php?cPath=47_240_242_249&products_id=1798

No

The anti-fouler works because it moves the sensor tip out of the exhaust flow.

The link you posted positions the sensor tip in the flow.

 

non foulers are like 6 bucks for 2 at the parts store in the help section.

 

gonna dig up this old thread. I have a 97 4.3 and my cat is rattling to all hell. i want to just get rid of it because it lays on the ground anyhow. my question is which o2 am i supposed to do this to. i have 4 o2's on this turd

 

This mod is for the post-cat O2 sensor like all of the pictures in this thread show. Since the cat has no effect on anything upstream, this is done to correct the detection coming from the outlet of the catalytic converter.

 

I have one upstream and three downstream. not sure if it was a cali truck originally or what.

 

Just did this and works like a charm! no CEL!

God bless the search button!

 

I deleted the cat on my 2003 4.3L yesterday.

I welded a straight pipe onto the stock muffler and clamped it onto the rest.

To add the fouler, I'd have to weld in an O2 sensor bung (as everything has been gutted). Would it be better to find a simulator instead, or go ahead and get a bung welded on and do the non-fouler mod?


Either way, this thing has way more power now that the old clogged cat is out!

 

Might as well get some non-foulers and make 'em up since their only a few bucks and I doubt you'll find an electronic simulator any time soon. The ultimate option is to have your PCM tuned.