Welcome to Ultimate Subaru Message Board, my lurker friend!
|Welcome to Ultimate Subaru Message Board, an unparalleled Subaru community full of the greatest Subaru gurus and modders on the planet! We offer technical information and discussion about all things Subaru, the best and most popular all wheel drive vehicles ever created.
We offer all this information for free to everyone, even lurkers like you! All we ask in return is that you sign up and give back some of what you get out - without our awesome registered users none of this would be possible! Plus, you get way more great stuff as a member! Lurk to lose, participate to WIN*!
* The joy of participation and being generally awesome constitutes winning
** Not an actual guarantee, but seriously, you probably won't regret it!
Serving the Subaru Community since May 18th, 1998!
O2 Sensor (Resistor Trick?) EJ22 OBD-II
Posted 11 July 2011 - 06:34 PM
As this thing runs pretty rich (Burns your eyes and nose) and I think its hurting the performence throughout the power band.
I have heard of spacing the O2 sensor back using "Spark-plug foulers" but you need to drill them out in order to work, and its a pretty hard compound. So, what options are there to make the ECU think its reading the exhaust gases right so it'll adjust the Air/fuel ratio correctly.
I am also getting 18mpg which is a sure sign its running to rich.
Posted 11 July 2011 - 08:06 PM
Posted 11 July 2011 - 08:09 PM
Here's a how to:
and a lengthy discussion:
Hope this solves your problem.
PS General Disorder is more knowledgeable than I so follow his lead.
Edited by brus brother, 11 July 2011 - 08:12 PM.
Posted 11 July 2011 - 08:23 PM
I find it hard to believe that the front sensor is now "Bad" as it threw this code right after I put on the UEL Header about this time last year. As I've heard from everyone who runs an aftermarket header, this code is the common problem with running an aftermarket header.
So as far as spacing goes, you are only supposed to space the rear sensor out? Also, are the front and rear sensors the same on this? I know on some other vehicles, they use two different styles (Along with connectors)
Thanks for the links there Brus.
Posted 11 July 2011 - 08:54 PM
I have no experience with the mods you did to your engine. Mine was stock all the way.
Posted 11 July 2011 - 08:57 PM
They are the same sensor - but with different wireing connectors. Front is triangular, rear is sqaure. Rear for your car is a front for a 90 to 94.... how I know all this is and retain it is beyond me....
The code is probably related not to the UEL itself - but the fact that it has no heat sheilds and is longer on some of the runners - causing the exhaust gas temp to drop at the cat and thus not catalize effeciently. You can wrap the header to prevent the escape of heat and possibly get the cat working again.... or you can just punch the guts of it out and run a sensor spacer for $8
0 user(s) are reading this topic
0 members, 0 guests, 0 anonymous users