7afe CEL code w/out 2nd o2 sensor, CEl code 2 weeks after installing a header without the 2nd o2 sensor. Options

[Tuminatuh]

I apologize if this has been asked before. The search function is practically worthless since I can't search the term "o2" and every search I tried brought about 25 pages of results (none of which helped me).

I installed my aftermarket header about 2 weeks ago. Since there is no place for the 2nd o2 sensor, I simply unplugged it. Just this morning, it threw a CEL code (code 21: oxygen sensor).

I want to know if any performance is going to be lost from not having the 2nd o2 sensor plugged in. From what I understand its job is to simply make sure the cat is functioning.

Also, if it matters, my '95 7afe has an intake and is also straight-piped.

- Tum

This post has been edited by Tuminatuh: Apr 9, 2010 - 7:55 PM

[Bitter]

i can't tell you any better than its already been told. learn how to fish and you won't go hungry.

[Tuminatuh]

i can't tell you any better than its already been told. learn how to fish and you won't go hungry.

Like I said in my first post... it's hard to search for these things when the search engine WON'T LET YOU SEARCH THE TERM "O2".

And, yes, I did find out what the error was (21: Oxygen sensor) and it was what I expected. But, I'd still like to know, will this lead to any complications in performance?

On my last car, if there was a sensor problem (or if a lean/rich comdition was detected), the ECU would go into limp mode and my car would become more sluggish and use more fuel. I just want to make sure that the same thing won't happen now. If all is well, then that'll be it and I don't care if I always have a CEL staring me in the face (I have a sticker over it anyways).

If there is already a thread on this, then I'm sorry... but I don't feel like roaming through 24 pages of results because the stupid search engine can't limit its searches to threads with ALL of the words searched for. Until the search function works properly, expect threads like this to keep popping up.

- Tum

EDIT: I finally read the "Advanced Usage" and found out how to search multiple terms at a time (+ or -). I've never seen a forum with this kind of search functionality. But, it DID help a lot and i found what I needed much easier...

This post has been edited by Tuminatuh: Apr 9, 2010 - 7:58 PM