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nct failed on emissions

  • 11-01-2015 5:24pm
    #1
    cartrouble1
    Registered Users, Registered Users 2 Posts: 1 ✭


    I have a 2002 nissan micra which has recently failed nct. The emissions low idle are CO 2.44 vol HC 333ppm. The high idle is CO 0.45 vol, Lambda 0.99. I brought it to a mechanic who changed the air mass sensor but made no difference. He says I would be throwing money away getting it fixed and even a new cat might not help. Any ideas would be great


Comments

  • #2
    mullingar
    Registered Users, Registered Users 2 Posts: 5,340 ✭✭✭mullingar


    cartrouble1 wrote: »
    I have a 2002 nissan micra which has recently failed nct. The emissions low idle are CO 2.44 vol HC 333ppm. The high idle is CO 0.45 vol, Lambda 0.99. I brought it to a mechanic who changed the air mass sensor but made no difference. He says I would be throwing money away getting it fixed and even a new cat might not help. Any ideas would be great

    High CO can mean poor air supply. high HC means incomplete burn of fuel.

    I'd give it a decent service to include a new air filter and new spark plugs.


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