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NCT failure!

  • 16-09-2016 7:44pm
    #1
    IronMan1979
    Registered Users, Registered Users 2 Posts: 2 ✭


    Hi folks I need your help here. My Opel Corsa 2004 Petrol failed NCT badly with CO level of 12%, HC 1.3 low and 11.5% CO, 1.1 HC high idle. Lambda is 0.69. My mechanic is saying I need to change the Lambda sensor and the CAT converter in addition to the timing chain which gonna cost around e1450. He is not even sure that changing all of those parts would even solve the emission problems. I really appreciate your opinion as I am really confused about what to do. Thank you!


Comments

  • #2
    nd
    Registered Users, Registered Users 2 Posts: 1,855 ✭✭✭nd


    your lambda reading is wayyyy rich so i'd start with just replacing your lambda sensor. You'd prob. get a second hand one on adverts for 10 euro.


  • #3
    blackbox
    Registered Users, Registered Users 2 Posts: 4,707 ✭✭✭blackbox


    The information points to running very rich. ThIs could be due to a problem with the lambda sensor, but it nearly seems too bad for that.

    Unless it is burning oil I would suspect a problem with the MAF.

    If its burning oil it's probably not worth the cost of repairs.

    I would leave replacement of cat as last resort.


    .


  • #4
    IronMan1979
    Registered Users, Registered Users 2 Posts: 2 ✭IronMan1979


    Cheers lads, it is not burning oil at all. I keep checking it. The mechanic couldn't believe the level of CO is this high. I am gonna start by changing the lambda sensor and then I will see how it goes from there. Thank you for your helpful replies.


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