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Excess Exhaust emission's

Discussion in 'Engine, Drivetrain, Fuel and Exhaust' started by rondeauteller, Jan 14, 2021 at 2:03 PM.

  1. rondeauteller

    rondeauteller New Member

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    Your Mercedes:
    Mercedes, C220, Blue Efficency Sport CDI, 2143CC , Manufactured 2009
    I have just successfully replaced the throttle body on my w204 c220 saloon which as extinguished the engine management light on my instrument panel.
    However, i now have another problem. As a result of replacing the throttle body my vehicle is now emitting large plumes of excess smoke via the exhaust system when cold. As soon as the engine gets up to temp the smoke disappears. I have tried turning the ignition on to position two and leaving it for 20 mins to see if the vehicle electronics would solve this issue but without success.
    Any comments as to how i can solve this issue would be greatly received.
     
  2. mattkh

    mattkh Senior Member

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    Where did you get the new throttle from ?
     
  3. Steve@Avantgarde

    Steve@Avantgarde Forum Supporter Authorised Forum Supporter

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    A tin or 2 of cataclean, some premium diesel and a good Italian de-coke should sort it out.
     
    John Laidlaw likes this.
  4. John Laidlaw

    John Laidlaw Senior Member

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  5. robin.large

    robin.large Senior Member

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    Try throttle reset?
    Ignition on to position 2 do not start engine
    Press throttle to floor for at least 10 seconds
    Keep foot down and switch ignition off
    Then release pedal.
    Wait a couple of minutes
    Start up and see if any change?

    Sent from my ONEPLUS A5010 using Tapatalk
     
  6. OP
    rondeauteller

    rondeauteller New Member

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    Your Mercedes:
    Mercedes, C220, Blue Efficency Sport CDI, 2143CC , Manufactured 2009
    The throttle body was purchased from a Mercedes main dealership.
     
  7. OP
    rondeauteller

    rondeauteller New Member

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    Mercedes, C220, Blue Efficency Sport CDI, 2143CC , Manufactured 2009
    Thanks for your reply, I'll give it a try.
     
  8. LostKiwi

    LostKiwi Senior Member

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    Old wives tale.
    Does absolutely nothing.
    You see this suggested on every car forum for every brand which would suggest every manufacturer uses the same programming and components manufacturer (which they don't).
     
  9. M80

    M80 Senior Member

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    It cost me nowt to try,
    it also did nowt.
     
  10. ajlsl600

    ajlsl600 Senior Member

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    clk3202001,sl6002003 with everything regrettably sold ,A class 170cdi auto. NG/TF1800 ML250
    Sorrio.I reckon efforts to get phones,laptops,car electronics to behave as designed takes up significant amount of our time,and takes a good bite out of our wallets .
     
  11. mattkh

    mattkh Senior Member

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    Did you play around with the butterfly in the throttle body when you were installing it ?
    I cant see it in pictures I have seen on the net, but do you remember how many wires were there on the electrical plug connecting to the throttle ?
     

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