Jump to content


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*!
  • Say hello and join the conversation
  • Subscribe to topics and forums to get automatic updates
  • Get your own profile and make new friends
  • Classifieds with all sorts of Subaru goodies
  • Photo hosting in our gallery
  • Meet other cool people with cool cars
Seriously, what are you waiting for? Make your life more fulfilling and join today! You and your Subaru won't regret it, we guarantee** it.

* 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!

Guest Message by DevFuse
 

Photo
- - - - -

O2 Sensor? 99 Imp O/b Sport New Owner


  • Please log in to reply
1 reply to this topic

#1 jonfit04

jonfit04

    USMB Regular

  • Members
  • PipPipPip
  • 59 posts
  • Somerset

Posted 16 September 2006 - 08:03 AM

Ok,
Again Another "cel" Issue. I Ran The Computer And It Gave Off A Code For Oxygen Sensor Malfunction, And Knock Sensor Malfunction. I Dont Understand Why It Gave Me The Knock Sensor Malfunction, B/c I Just Tried To Replace The Sensor...when I Did The Car Ran Like Horse Sh*t. It Would Mis And Carry-on, Would Not Run At All...so I Took The New Sensor Off And Cleaned The Block And Old Sensor...put It Back On And The Car Ran Fine....now I Get The Cel And It Gives Me O2 Sensor.....i Quess What My Question Is, Does A 1999 Imp O/b Sport Have 1 Or 2 Sensors...i Looked Quickly Under The Car This Morning And I Seen One At The Cat Converter. Also The Car Is Doing Pretty Much The Same Thing It Did When The Knock Senor Caused The Cel...it Would Drive Fine And Then All Of A Sudden Start To Hesitate And Then The Rpm's Would Drop And Go Into "limp Home Mode"...still Run, But Would Not Go Very Fast For A Few Moments And Then Go Back To Normal. So Here's What I Am Thinking To Do. I Am Going To Call A Mechaninic And Have The O2 And Knock Sensor Changed At The Same Time...the Car Has 192000 Mile On It, Dont Know Weather Or Not It Was Ever Changed.....before I Do, Just Would Like To Know If This Is Something I Could Possibly Do, Or If It Something That Should Be Left Up To Professionals?

Thanks
Jon

#2 Wayne Boncyk

Wayne Boncyk

    Subaru Fanatic!

  • Members
  • 354 posts
  • Denver

Posted 16 September 2006 - 12:16 PM

O2 and Knock sensors are both pretty easy to change if you've got some mechanical experience, the tools needed, and some time. The O2 sensors will be more difficult than the Knock sensor, since they're in the path of hot exhaust gases and that causes them to get stuck in their flanges. Expect to spend some time waiting for a penetrating oil (like PB Blaster or similar) to help to free them up. You should have 2 O2 sensors on that vehicle, right? One at the front of the Cat, and one at the Cat output to the exhaust pipe.

Sounds to me that you may need more than just sensors -- just because the OBD codes tell you that something isn't right with them doesn't mean that the sensor has necessarily failed. From what you're describing, I would guess that your timing is off a bit, too. Perhaps the timing belt has jumped a tooth. Just a guess -- but unless you do a little more detective work, all we can do is guess.




0 user(s) are reading this topic

0 members, 0 guests, 0 anonymous users