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Emissions on nct

  • 10-05-2017 11:03am
    #1
    robertpatterson
    Registered Users, Registered Users 2 Posts: 930 ✭✭✭


    My sister has a Chevrolet lacetti and it failed the nct on emissions
    It got a new catalytic converter about a year ago
    It failed on high co on low idle and high idle?
    Any ideas on what can fix it ?


Comments

  • #2
    rex-x
    Registered Users, Registered Users 2 Posts: 1,893 ✭✭✭rex-x


    What was the Lambda? High co and good Lambda is the cat, if the Lambda is down around .87 etc then it's running too rich


  • #3
    robertpatterson
    Registered Users, Registered Users 2 Posts: 930 ✭✭✭robertpatterson


    lambda is .99 co on low idle is.48 and high is .35


  • #4
    rex-x
    Registered Users, Registered Users 2 Posts: 1,893 ✭✭✭rex-x


    You aren't wildly outside, there's a chance that if you get the cat hot enough before the test it might scrape through. I'd say it was a cheap after market cat fitted before and now it's losing its effectiveness


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