Oxygen sensor extension

[Si2000 Vtec]

While we're on the topic of 02 sensors, OBD2 have two 02-sensors: One on the header, and one on the cat.

I build a test-pipe for my cat, so there isn't a home for #2 02 Sensor. From what I've heard, I can just ground out this 02 sensor and it won't trip a code on my ECU. Right now, when the car warms up, it's setting the check engine light off.

Know anything about this?

[Tofuboy]

OBD2 have two 02-sensors: One on the header, and one on the cat.

I don't know the exact position of the 2nd O2 sensor (on the cat? so it has a hole on the cat and an O2 sensor lives there? that's wried). Anyway, I am assuming the 2nd O2 sensor is somewhere toward the end section of the cat where air flows out the cat.

And NO it will NOT work if you ground the 2nd O2 sensor.

The second O2 sensor's job is quite different, rather to check your emission, it is used to monitor to see if the cat is doing it's job.

There is a look up chart in the ECU's PROM for the 2nd O2 sensor, when the exhaust gas comes out of the cat and passes by the 2nd O2 sensor it checks how good of the converting did the cat do.

If you ground out the 2nd O2 sensor, it will tell the ECU that the cat is doing such an excellent job that there is no pollution coming out of your cat, then the ECU smell fishy about the O2 sensor and spits the check engine light at your face. :smoker2:

Si2000 Vtec--where are my tires? j/k

[Si2000 Vtec]

Haha, you can have the damn tires

Anyway, right now my 02 sensor is just tied to a tortion bar under my car, and its trippin' code after it gets warmed up. It runs perfectly fine, I just have to deal with the yellow light of death shining in my face as I drive down the road.

[Tofuboy]

right now my 02 sensor is just tied to a tortion bar under my car

why don't you just unplug the wire and take the sensor out, that way you might avoid losing the sensor.

Yes, there shouldn't be a problem running the engine, just you will have to live with the light on.

[stefan525]

Hey, I did a swap on my 97 civic and I had to extend my O2 sensors. What I did is, I extended the wire harness before the plug of the O2 sensor. It seems to be easier and safer than try to extend the wires after the O2 sensor plug. Good luck. stefan525 vroom vroom

[fourreel]

all an O2 sensor is, is a thermo couple (exhaust gas temp [EGT] probe). bi-metallic packed in potassium or something. The hotter the probe gets the more voltage (very low) it puts out. If the puter picks up too high of a voltage (lean burn) it enrichens the fuel/air mixture, too low of a voltage and it leans out the mixture. It does not sense anything but heat. One or two wire systems do not usually have a pre-heating element (for start up) 3 or more wires usually have a pre-heating element. The length of wire won't matter as long as it isn't too obnoxious, inches won't matter.

[CivicSpoon]

This thread is 2 years old. Please pay attention to the dates of the thread before posting in them.

[fourreel]

In case anyone is doing a search AS I AM, it is good stuff to know. Who gives a crud how old it is. Ya get bitched at for not searching and ya get bitched at for searching.

[CivMoeEJ8]

I'll sell you a plug and play O2 sense extension. I'll get you some pix if you want them. I got them with my Apex'i header and didn't need it. Let me know. Email me at [email protected]

[CivicSpoon]

Originally Posted by fourreel

In case anyone is doing a search AS I AM, it is good stuff to know. Who gives a crud how old it is. Ya get bitched at for not searching and ya get bitched at for searching.

Why do I say? Hmmm...because of sh*t like this...

Originally Posted by CivMoeEJ8

I'll sell you a plug and play O2 sense extension. I'll get you some pix if you want them. I got them with my Apex'i header and didn't need it. Let me know. Email me at [email protected]

And no you don't get bitched at for searching, you get bitched at for posting in old ass threads that have long since died. Also there are a lot of people who have been here for years and have seen all the topics before, so when a bunch of newbies continually bring back old threads to the top it tend to get annoying really quick.

[CivMoeEJ8]

Originally Posted by CivicSpoon

Why do I say? Hmmm...because of sh*t like this...

And no you don't get bitched at for searching, you get bitched at for posting in old ass threads that have long since died. Also there are a lot of people who have been here for years and have seen all the topics before, so when a bunch of newbies continually bring back old threads to the top it tend to get annoying really quick.

You b!tch more than my granny and girlfriend combined! SHUT UP!!

If this forum was on top of it's stuff then there would be an archived section where old threads would be stored (still easily searched through). And BTW, I'm not a newb!

[GScivic7]

If this forum was on top of it's stuff then there would be an archived section where old threads would be stored (still easily searched through).

If you don't like how this forum doesn't have an archive, cause we really wouldn't need one if people would pay attention to post date, then leave.

BTW:

Originally Posted by CivMoeEJ8

You b!tch more than my granny and girlfriend combined! SHUT UP!

there's the pot calling the kettle black.

[CivicSpoon]

Originally Posted by CivMoeEJ8

You b!tch more than my granny and girlfriend combined! SHUT UP!!

If this forum was on top of it's stuff then there would be an archived section where old threads would be stored (still easily searched through). And BTW, I'm not a newb!

Go screw yourself. Maybe if you paid attention you wouldn't look like a moron posting that you had a sensor available, had you actually looked at the dates of the post; or even read my post above that stated it was a 2 year old thread. Don't blame your stupidity on me jackass. And yes you are a newbie; look below your Username: AF Newbie, look at your joined date: Today. You are a newbie. I never said you were a newbie to cars or H/A's, but to this forum you are; and your mistake clearly shows that. What's considered archived are posts 6 months old or older, and it is looked down upon when someone other than the original poster brings it back. Sorry if this is too hard of a setup for you...

[CivMoeEJ8]

How about this, I'm going to bump this thread up just to piss you off cuz I see how mad it makes you!!!! hahahah

[fourreel]

Let's bump it one more time. I'm taking this site off my list. I've yet to see an intelligent answer for anything that is half way difficult. Thought there might be some knowledgeable peeps on this site but just must be a bunch of back yard mechanics. I didn't know this site wasn't for newbies!!