How TO: CEL/MIL Eliminator!

[ghettobubba2001]

hey guys whats up.... just to step in and say... i bought a universal O2 sensor for my p5 and i used a nonfouler to put it into my new OBX header (because i broke the stock one. The car runs fine and everything. But i was wondering if it would be ok for me to have this setup...? Im talking about the first O2 Sensor. Now i also need to do the CEL/MIL fix with the non-fouler for the 2nd O2 sensor to rid of the CEL light correct? If you need pics i can give them to you.

 

[Lord_Zath]

whoa whoa whoa

you need the nonfouler "trick" for the second o2 sensor, not the first o2 sensor. The first o2 sensor is not affected by the header at all and needs to be in the stream for proper tuning. The second o2 sensor is affected by the header since there is no cat before it anymore. The second o2 sensor is the one responsible for telling the ECU that there's a problem.

 

[RaiderMS3]

And you do not do both CEL fixes to the 2nd 02. Do one or the other, but not both. Cut the wiring for the CEL fix posted here, or bolt on the spark plug non foulers to the 2nd bung and problem solved. Now go take the non-foulders off of the 1st o2 bung, as they are not needed.

 

[Hughes412]

Who can I buy one from. I don't want to make one and mess it up. Is there a companly that sells them?

 

[RaiderMS3]

Who can I buy one from. I don't want to make one and mess it up. Is there a companly that sells them?

http://www.msprotege.com/vbb230/showpost.php?p=1641232&postcount=274

 

[Hughes412]

Thanks, I thought there was a defauler that fit the sencore and I couldn't find it. I thought about doing this.

 

[RaiderMS3]

I did it, and have had zero problems in 8,000+ miles.

 

[Lord_Zath]

ditto

 

[khaosman]

http://www.msprotege.com/vbb230/showpost.php?p=1641232&postcount=274

Thanks for the link. I didn't know what the non-fouler looked like, now I do! It looks like simple. How does it work? Just vents stuff out? heh

 

[Lord_Zath]

It pulls the 2nd o2 sensor farther from the exhaust stream. It detects the temperature, but it does not detect enough of the exhaust gas to realize that the first catalytic isn't doing its job. So it doesn't throw a CEL.

 

[Hughes412]

And only costs 4 bucks and change. Thanks fellas, I got it all together and back on the road. Runs like a top. (headbang)

 

[RaiderMS3]

Good to hear!

 

[aznativesilverp]

I am getting the second O2 sensor bung welded this week on a ractive header. Has anybody here added the second bung on a ractive header along with adding the foulers to keep the cel away. Let me know. (eek2) (eyeballs)

 

[RaiderMS3]

I am getting the second O2 sensor bung welded this week on a ractive header. Has anybody here added the second bung on a ractive header along with adding the foulers to keep the cel away. Let me know. (eek2) (eyeballs)

I have. pic attached.

 

[ZoomZoom03]

ok just so i can clarify, u use either the wire/reistor/cap method or u can use the spark plug non fouler method to remove the CEL/MIL issue regarding header install?? and the OBX header has all the right bungs unlike the Ractive header which is missing the second bung??

hope this came out right..im planning on purchasing an OBX header and wanted to make sure i get all the required pieces and parts at the same time

thanx in advance

 

[Hughes412]

ok just so i can clarify, u use either the wire/reistor/cap method or u can use the spark plug non fouler method to remove the CEL/MIL issue regarding header install?? and the OBX header has all the right bungs unlike the Ractive header which is missing the second bung??

hope this came out right..im planning on purchasing an OBX header and wanted to make sure i get all the required pieces and parts at the same time

thanx in advance

Do the non fouler, it's save you a few bucks. If you do the non fouler you'll need a 1/2in drill bit to drill all the way through so that the o2 will fit in it. I did it and it works great. There is a how to on here too.

 

[ZoomZoom03]

Do the non fouler, it's save you a few bucks. If you do the non fouler you'll need a 1/2in drill bit to drill all the way through so that the o2 will fit in it. I did it and it works great. There is a how to on here too.

thanx Hughes, i saved this page for when i get ready to do the non fouler trick, appreciate the feedback

 

[khaosman]

The non fouler works great. Well, I haven't driven far enough to know if I avoided a CEL yet. I picked up the parts and drilled it out, very simple.

 

[Hughes412]

thanx Hughes, i saved this page for when i get ready to do the non fouler trick, appreciate the feedback

No problem. I just went threw this not 3 week ago. I have the wagner header and didn't need one until I gutted my precat. I've put on about 1k miles and it all good.

 

[P5 Rally]

I've had my nonfouler in since May....probably about 6-8000 km and no CEL. The nonfouler method is so cheap and easy to do