Advertisement
If you have a new account but are having problems posting or verifying your account, please email us on hello@boards.ie for help. Thanks :)
Hello all! Please ensure that you are posting a new thread or question in the appropriate forum. The Feedback forum is overwhelmed with questions that are having to be moved elsewhere. If you need help to verify your account contact hello@boards.ie
Please note that it is not permitted to have referral links posted in your signature. Keep these links contained in the appropriate forum. Thank you.

https://www.boards.ie/discussion/2055940817/signature-rules
Hi there,
There is an issue with role permissions that is being worked on at the moment.
If you are having trouble with access or permissions on regional forums please post here to get access: https://www.boards.ie/discussion/2058365403/you-do-not-have-permission-for-that#latest

Ford Mondeo NCT Emissions FAIL

  • 22-07-2007 1:59pm
    #1
    Registered Users, Registered Users 2 Posts: 895 ✭✭✭


    How do all.
    My 1999, 1.6 petrol, black top engine, mondeo failed CO emissions.
    Results

    Engine/Oil Temperature 82 celcius

    Low idle CO 0.05 vol%
    (700 rpm) HC 0 ppm

    High idle Lambda: 0.985
    (3130 rpm) CO 0.38 vol% above 0.3 % fail
    HC 120 ppm

    Any ideas lads on a solution?


Comments

  • Closed Accounts Posts: 7,686 ✭✭✭JHMEG


    Hi CO usually means the cat is gone.


  • Registered Users, Registered Users 2 Posts: 937 ✭✭✭Mr.Diagnostic


    JHMEG wrote:
    Hi CO usually means the cat is gone.

    Not true, high CO usually means that the engine is running rich, ie. there is too much fuel in the fuel/air mixture. it can also be caused by an inefficent Cat.

    In this case the normal Lambda combined with the slightly high CO and HC could indicate a Cat problem. The difficulty here is that the NCT fail sheet does not show enough info to allow a good diagnosis.


  • Registered Users, Registered Users 2 Posts: 895 ✭✭✭zapata


    Is it safe to say that the o2 sensor\lambda is working ok?
    Or could it be sending wrong info to ECU causing rich running issues.
    I might remove it for inspection. (Non serviceable part)


  • Closed Accounts Posts: 7,686 ✭✭✭JHMEG


    Not true, high CO
    Ok, in reverse: A busted cat will, among other things, allow too much CO out the tailpipe.


  • Registered Users, Registered Users 2 Posts: 937 ✭✭✭Mr.Diagnostic


    zapata wrote:
    Is it safe to say that the o2 sensor\lambda is working ok?
    Or could it be sending wrong info to ECU causing rich running issues.
    I might remove it for inspection. (Non serviceable part)

    There is not enough data to say that for certain but it is likely. If I had to put a % on it I would say its about 95% sure.

    Lambda readings from a gas Analyser and the Lambda/O2 Sensor are not directly related.


  • Advertisement
Advertisement