Welcome to the North American Subaru Impreza Owners Club Sunday July 13, 2014
Home Forums WikiNASIOC Products Store Modifications Upgrade Garage
NASIOC
Here you can view your subscribed threads, work with private messages and edit your profile and preferences Home Registration is free! Visit the NASIOC Store NASIOC Rules Search Find other members Frequently Asked Questions Calendar Archive NASIOC Upgrade Garage Logout
Go Back   NASIOC > NASIOC Technical > Engine Management & Tuning > UTEC

Welcome to NASIOC - The world's largest online community for Subaru enthusiasts!
Welcome to the NASIOC.com Subaru forum.

You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, free of charge, you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, so please join our community today!

If you have any problems with the registration process or your account login, please contact us.
* Registered users of the site do not see these ads.
Reply
 
Thread Tools Display Modes
Old 03-29-2006, 08:16 PM   #1
Zornorph
Scooby Specialist
 
Member#: 17332
Join Date: Apr 2002
Chapter/Region: NESIC
Location: The neighbor's yard
Vehicle:
2004 Black STI
Not stock anymore

Default Front o2 sensor question

I did search for quite a while, so bear with me.

About 16 months ago my 04 sti had the ftont o2 sensor changed out due to slight surging at 0-5% throttle.

Now I am getting the same thing, only stronger surging. I am out of basic warranty, so I am looking for a way to check the front o2. The deaker sez there are 5 o2 sensors on my car, which I have never heard before.

Does the utec show o2 sensor voltage??

Thanks for help!
* Registered users of the site do not see these ads.
Zornorph is offline   Reply With Quote
Old 03-29-2006, 08:21 PM   #2
ShaggyGT
*** Banned ***
 
Member#: 19221
Join Date: May 2002
Chapter/Region: South East
Location: Jacksonville, FL
Vehicle:
2005 Legacy GT (STi)
UR35R/Rotated Intake Mani

Default

There are 2 O2 sensors on your car. The front one, which is in the exhaust manifold, and the rear one which is in the downpipe. You will need an OBDII scanner or Deltadash (or any OBDII software variant) to read the voltage from your sensor.

-Matt
ShaggyGT is offline   Reply With Quote
Old 03-29-2006, 08:41 PM   #3
Zornorph
Scooby Specialist
 
Member#: 17332
Join Date: Apr 2002
Chapter/Region: NESIC
Location: The neighbor's yard
Vehicle:
2004 Black STI
Not stock anymore

Default

You know, that's what I thought, but the dealer was trying to snow me with this "could be any one of 5 o2 sensors". The rear one is post cat and there to check for the function of the cat, and the front provides feedback to the ecu for fueling, correct?
Zornorph is offline   Reply With Quote
Old 03-29-2006, 09:14 PM   #4
ShaggyGT
*** Banned ***
 
Member#: 19221
Join Date: May 2002
Chapter/Region: South East
Location: Jacksonville, FL
Vehicle:
2005 Legacy GT (STi)
UR35R/Rotated Intake Mani

Default

Yep, you got it.

-Matt
ShaggyGT is offline   Reply With Quote
Old 03-29-2006, 10:28 PM   #5
Zornorph
Scooby Specialist
 
Member#: 17332
Join Date: Apr 2002
Chapter/Region: NESIC
Location: The neighbor's yard
Vehicle:
2004 Black STI
Not stock anymore

Default

Thanks man.
Zornorph is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Front O2 sensor vs Rear O2 sensor (MY00 RS) Jewbaru Service & Maintenance 3 07-29-2012 10:14 PM
front o2 sensor question Mlapekas Electrical & Lighting 4 01-21-2010 10:16 AM
Front O2 Sensor question HamrTym Factory 2.0L Turbo Powertrain 22 05-17-2007 04:50 PM
Quick Front O2 sensor question Turbo NV Mid Atlantic Impreza Club -- MAIC 7 08-22-2006 11:16 AM
Front O2 sensor replacement Question Peaty Normally Aspirated Powertrain 1 11-16-2002 02:00 AM


All times are GMT -4. The time now is 02:38 PM.


Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Powered by Searchlight © 2014 Axivo Inc.
Copyright ©1999 - 2014, North American Subaru Impreza Owners Club, Inc.