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Changing the first Lambda sensor CLK200

Discussion in 'Engine, Drivetrain, Fuel and Exhaust' started by Ryannn, Jul 11, 2018.

  1. Ryannn

    Ryannn New Member

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    Joined:
    Jul 1, 2017
    Your Mercedes:
    C209 CLK200 2005
    Hi everyone,

    I need to change the pre cat Lambda sensor on my 2005 CLK200. In typical fashion the wire disappears behind the engine. What’s the best way to get to the connector? There doesn’t appear to be much slack.

    Cheers, pic should be attached!
     

    Attached Files:

  2. Wighty

    Wighty Senior Member

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    Joined:
    Aug 4, 2016
    Location:
    Sunny Essex
    Your Mercedes:
    W211/E320cdi/2009 and CLK200k 2009
    Not sure about the Lambda , but have you ever had a gearbox ATF change , the tab looks black which is original factory . Would have a red tab otherwise ?
     
  3. OP
    Ryannn

    Ryannn New Member

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    Joined:
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    Your Mercedes:
    C209 CLK200 2005
    It doesn’t look like it has, it was mentioned at the B service so I’ll probably get it done when the A comes round in a few months. Trying to sort rich running at the moment but STAR diagnosis shows no faults other than the Lambda reading high! Can’t find a vac leak either.
     
    Wighty likes this.
  4. Oldspanners

    Oldspanners Senior Member

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    Oct 30, 2017
    Your Mercedes:
    C CLASS 2004 C180
    If it's the same as the C class it's on the left hand side of the gearbox mounted in a plastic clip. Access from below the car after removing the rear plastic under-tray. Tie a piece of cord to the end as you remove it as it makes it a lot easier to pull the new one in over and around the back of the engine and bell housing.
     
  5. OP
    Ryannn

    Ryannn New Member

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    Your Mercedes:
    C209 CLK200 2005
    That’s great thanks! I’ll have a look tomorrow.
     

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