W211 E270 small negative temperature idle fluctuation

Discussion in 'Engine' started by mike75, Nov 27, 2014.

  1. mike75

    mike75 Active Member

    Messages:
    66
    Joined:
    Nov 27, 2014
    Car:
    w211 e270 2003
    Hello . I have a W211 E270 2003 and when temperatures are negative as soon as I start the car i have a fluctuation at idle for about 10 seconds. It`s not a big fluctuation.... between 800 and 820 rpm after which it stabilizes at 800 and when it warms fixed drops to 780 . Do you think it`s a problem?

    Also the engine noise ( that old diesel ) is present at negative temperatures .

    PS Scan STAR and absolutely no error on the car
     
  2. Troon

    Troon Hardcore MB Enthusiast

    Messages:
    1,184
    Joined:
    Aug 23, 2011
    Location:
    Staffordshire
    Car:
    A big one
    By "negative temperature" I assume you mean below 0°C?

    Doesn't sound like a problem to me: lots of extra loads on the car when it's cold, such as the huge electrical heaters in the HVAC system.
     
  3. OP
    OP
    mike75

    mike75 Active Member

    Messages:
    66
    Joined:
    Nov 27, 2014
    Car:
    w211 e270 2003
    Yes. Ex. this morning was about -2 C. The rest of the starts in the same day is without problem. Even the car sits more then 6 h.
     
    Last edited: Nov 27, 2014

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