Walker O2 Sensor Install | FerrariChat

Walker O2 Sensor Install

Discussion in '348/355' started by dertizjos, Dec 9, 2011.

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  1. dertizjos

    dertizjos Formula Junior

    Jul 20, 2011
    453
    New Jersey
    Was recently having a little idle issue with my 348. The idle would raise after the car was warm and flucuate by as much as 200-500 rpm at idle. I would also get an intermittent 1-4 light.

    Well, in the end I changed both O2 Sensors with the Plug and Play Walker O2 Sensors. ($69.00 each) I did not document the install because so many of you guys have already done such a nice job of doing so.

    All I can say is WOW. I would never have beleived what an O2 sensor does to a car. The idle is much more steady, staying right between the 1K and the 1100K mark. The car idles smooth with no hint of the intermittent miss I used to hear. It accelerates much smoother and feels like it has more power.

    Best of all...NO 1-4 light. Not once and it was pretty consistantly coming on.

    Thanks to this forum for all the great archived advise and help.

    The job was pretty simple and took abot 30 minutes start to finish.
     
  2. AceMaster

    AceMaster Three Time F1 World Champ

    Feb 6, 2009
    34,789
    Ontario, Canada
    Full Name:
    Mike
    Nice job...glad to hear it idles bettter now.

    Can you please list the part # of the Walker sensor that you used and where you bought it from?

    Thx
     
  3. dertizjos

    dertizjos Formula Junior

    Jul 20, 2011
    453
    New Jersey
    Sorry guys, I meant to add this information in my first post.

    The part number is Walker#:250-24040.

    I got them from www.oxygensensors.com. The direct link is https://www.oxygensensors.com/catalog.php?&pkey=1103814. The price was $69.99 ea. and shipping was free.

    I received the order in two days and the customer service was great. I wanted them before the weekend so I could use the car on Saturday and they upgraded the shipping at no cost so I would have them by today. Very impressed with them.
     
  4. ernie

    ernie Two Time F1 World Champ
    Lifetime Rossa Owner

    Nov 19, 2001
    22,620
    The Brickyard
    Full Name:
    The Bad Guy
    Glad to hear it, and thanks for the info.

    As for posting a how-to, the more the merrier in my opinin, even if there are already other posts. Different perspectives on the same procedure, can help make the process more efficient. Every little bit helps no matter how small, it all adds up for the benefit of the Brotherhood.
     
  5. dertizjos

    dertizjos Formula Junior

    Jul 20, 2011
    453
    New Jersey
    I whole heartedly agree.

    I was able to do the job with an O2 Sensor (22mm - 7/8 inch) socket from the top of the engine bay. I did remove the air box just to make sure I got to the plugs (which are located just underneath it) and they were seated well. It can probably be done without taking it off for the flexible and brave.

    I made sure to use anti-seize on the threads. I had some but the O2 Sensors came with it in the package. I also made sure to put a little grease on the electrical contacts for insurance.

    Like I said, the total time was about 30minutes start to finish and was well worth it.

    Coming from a Street Rod background where carburators are the norm and catalytic convertors and computers are not, I was amazed at the difference between a working O2 Sensor and a faulty one. It feels like I put a brand new ignition system in the car.
     
  6. AceMaster

    AceMaster Three Time F1 World Champ

    Feb 6, 2009
    34,789
    Ontario, Canada
    Full Name:
    Mike
    Excellent, thank you very much.

    I agree with Ernie, the more threads the better :)
     

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