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B180 CDI 2005 IDLE

Discussion in 'Engine, Drivetrain, Fuel and Exhaust' started by Anthony Cutts, Nov 15, 2020.

  1. Anthony Cutts

    Anthony Cutts New Member

    Messages:
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    Joined:
    Nov 15, 2020
    Your Mercedes:
    B180 CDI 2005
    Hi All,

    I have recently purchased a B-Class B180 CDI Automatic - drives great with no "real problems" no knocks or bangs etc.. but..

    I have an issue with the car when it's idle, it is making a noise like it wants to stall. I have plugged into the ODB port and it shows no active faults.

    I first thought it was something to do with the Mass Airflow sensor as when this was unplugged it went back to "normal" idle.. I have since changed this part and it has somewhat made a difference certainly it drives alot better... but I still at times notice the problem especially when sat stationary at idle.

    Can someone possibley give me any other suggestions what else it could be?

    Thanks

    Anthony
     
  2. mattkh

    mattkh Senior Member

    Messages:
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    Joined:
    Aug 2, 2006
    Location:
    England
    Your Mercedes:
    W168 1999 1.6
    Any idea of the mileage
     
  3. OP
    Anthony Cutts

    Anthony Cutts New Member

    Messages:
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    Joined:
    Nov 15, 2020
    Your Mercedes:
    B180 CDI 2005
  4. mattkh

    mattkh Senior Member

    Messages:
    1,655
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    Joined:
    Aug 2, 2006
    Location:
    England
    Your Mercedes:
    W168 1999 1.6
    Did you change the air filter when you were at it?
     
  5. OP
    Anthony Cutts

    Anthony Cutts New Member

    Messages:
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    Joined:
    Nov 15, 2020
    Your Mercedes:
    B180 CDI 2005
    Not yet - I will be taking it for a full service soon - see if that changes anything
     
  6. Exp21

    Exp21 Senior Member

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    Joined:
    Dec 17, 2018
    Location:
    Italy
    Your Mercedes:
    s204 C200 CDI Blue Efficiency MY2012, w245 B200 CDI Facelift
    Hi. I have the same engine and years ago had a very rough idle, especially in winter. Then I had to do the head gasket (due to a oil leak) so they cleaned egr valve, mixing chamber, intake manifold and it came back to regular and quiet. Probably it's the egr slightly open at idle due to clogging? Hope it can help
     
  7. ajlsl600

    ajlsl600 Senior Member

    Messages:
    4,820
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    2,272
    Joined:
    Nov 18, 2013
    Location:
    france
    Your Mercedes:
    clk3202001,sl6002003 with everything regrettably sold ,A class 170cdi auto. NG/TF1800 ML250
    Do let us know the cause fix,when sorted.
     

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