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Starlet failed test for high emissions

  • 27-01-2016 9:25pm
    #1
    Squatman
    Registered Users, Registered Users 2 Posts: 1,618 ✭✭✭


    Folks,
    Just wondering if anyone knows what i can do to fix failed emissions on a 96 toyota starlet.

    Results are as follows

    Low idle 690 rpm CO 3.54%vol
    HC 563 ppm

    High Idle 2670 rpm

    Lambda .91
    CO 3.87 vol %
    HC 351 ppm

    the car is running rich.

    I have attempted to clean the MAF sensor, but cannot get into it due to rounded screws. otherwise, i have replace the oxygen sensor, the map sensor, and a sensor in the airbox (donor car) however maf on donor car is different, i havent tried this. my question so really is, what causes low lambda, high co and high HC??


Comments

  • #2
    liam7831
    Registered Users, Registered Users 2 Posts: 2,819 ✭✭✭liam7831


    Try Dipetane


  • #3
    Squatman
    Registered Users, Registered Users 2 Posts: 1,618 ✭✭✭Squatman


    liam7831 wrote: »
    Try Dipetane
    i would be reluctant to do that. its probably outside that range on the emissions.


  • #4
    liam7831
    Registered Users, Registered Users 2 Posts: 2,819 ✭✭✭liam7831


    Try ask this lad he has a starlet, its a turbo though

    http://youtu.be/_WNwxsijtws

    Not sure if he will be any help or not.......


  • #5
    liam7831
    Registered Users, Registered Users 2 Posts: 2,819 ✭✭✭liam7831


    DP


  • #6
    Squatman
    Registered Users, Registered Users 2 Posts: 1,618 ✭✭✭Squatman


    found your video there too



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  • #7
    Sebo_ep91
    Registered Users, Registered Users 2 Posts: 3 ✭Sebo_ep91


    Just wondering if you have resolved the issue I am on the same boat and need help!


  • #8
    Sebo_ep91
    Registered Users, Registered Users 2 Posts: 3 ✭Sebo_ep91


    Just wondering if you have resolved the issue I am on the same boat and need help!


  • #9
    Pops_20
    Registered Users, Registered Users 2 Posts: 720 ✭✭✭Pops_20


    Sebo_ep91 wrote: »
    Just wondering if you have resolved the issue I am on the same boat and need help!

    Do you have the emissions results from the NCT? Post them up here, it will give a better idea of what is wrong.


  • #10
    Sebo_ep91
    Registered Users, Registered Users 2 Posts: 3 ✭Sebo_ep91


    Pops_20 wrote: »
    Do you have the emissions results from the NCT? Post them up here, it will give a better idea of what is wrong.


    Rpm 3650

    Co 9.40 vol%

    HCC 455

    Lambda 0.76

    Both low and high idle are the same rpm as the lad testing said it wasn’t changing the results were fairly the same. Please help I am clueless with emissions and need the car out


  • #11
    Leonard Hofstadter
    Registered Users, Registered Users 2 Posts: 5,541 ✭✭✭Leonard Hofstadter


    Your car is running extremely rich. The exhaust must surely stink of petrol from all the excess fuel?

    Fix that and the other readings should come into line, but the longer you leave it the more you will risk needing to replace the catalytic converter and various sensors as they will get fouled up from the constant rich running.


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  • #12
    Pops_20
    Registered Users, Registered Users 2 Posts: 720 ✭✭✭Pops_20


    Does your car have any modifications? I'm guessing the car is a Glanza Turbo by your username!

    Is the car running higher boost than standard? Does it have an aftermarket fuel pressure regulator? Have you checked that the car in fact has a catalytic converter in place?

    Running higher boost will lead to the car running leaner more often than not, but if there is any problem with any modifications on the car then it could inadvertently lead to the car running rich.


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