1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.

2010 E350 CDI Bad Idle when started cold

Discussion in 'Engine, Drivetrain, Fuel and Exhaust' started by Georgi Yanchev, Jun 8, 2019.

  1. Georgi Yanchev

    Georgi Yanchev New Member

    Messages:
    6
    Likes Received:
    0
    Joined:
    May 7, 2019
    Your Mercedes:
    2010 E350 CDI
    Hi to everyone , Im new to the forum and new to Mercedes. Just recently bought a 2010 E350 Cdi with 69000 miles on the clock and I love it. (Great combo, Blue with cream interior).

    What I've noticed is every morning when i start the car cold the rpm goes up and down for 5mins and it feels the car is slightly shaking. Once it gets warm i slightly depress the accelerator and bring the rpm up few times and the car goes to normal and rpm stable. Once it gets to normal temp the car is great. It puts a smile on my face every-time I drive it ! What ive also noticed its a strange smell sometimes around the car when i stop.

    Can all of the above be related to the DPF ? Maybe a bad glow plug ? ( Ive just had a B service 2 weeks ago )

    If anyone has any suggestions , let me know, but ill be booking a scan soon to check for any error codes.

    Thank you all in advance ! 62386242_2340146162941240_8968376920798396416_n.jpg 62203081_686153248505231_4493451611787493376_n.jpg 62203577_2220185458076718_8098386717528031232_n.jpg 61957921_482150182529850_3799811872337690624_n.jpg
     
  2. bembo449

    bembo449 Senior Member

    Messages:
    3,379
    Likes Received:
    819
    Joined:
    Jan 2, 2012
    Location:
    lincolnshire
    Your Mercedes:
    w221 320cdi , r170 23k , range rover vogue , insignia vxr , shitron dispatch
    gorgeous car pal but was it purchased from a trader ??
     
  3. OP
    Georgi Yanchev

    Georgi Yanchev New Member

    Messages:
    6
    Likes Received:
    0
    Joined:
    May 7, 2019
    Your Mercedes:
    2010 E350 CDI
    Thank you, Ive bought it 3 weeks ago from a dealer , but the car was absolutely brilliant the first week. It has 3 months comprehensive warranty , but not sure what it covers and if I can get it back to them to sort the issue out
     
    Last edited: Jun 8, 2019
  4. bembo449

    bembo449 Senior Member

    Messages:
    3,379
    Likes Received:
    819
    Joined:
    Jan 2, 2012
    Location:
    lincolnshire
    Your Mercedes:
    w221 320cdi , r170 23k , range rover vogue , insignia vxr , shitron dispatch
    ok you get 3 months full coverage under the consumers act of 2015 , repair , replace or refund , so take it back to where you bought it
     
    Wighty likes this.
  5. OP
    Georgi Yanchev

    Georgi Yanchev New Member

    Messages:
    6
    Likes Received:
    0
    Joined:
    May 7, 2019
    Your Mercedes:
    2010 E350 CDI
    Thanks for your advice. Ill give them a call Monday morning and see how it goes.
     
  6. malcolm210

    malcolm210 Senior Member

    Messages:
    3,397
    Likes Received:
    514
    Joined:
    Aug 21, 2005
    Was the rough idle when the engine is cold there before the B service? If the air filters have been replaced you may have a slight air leak which would create a weak mixture so worth checking the plumbing is all correct and any electrical connections secure. The hot smell is the DPF regenerating this happens every 300/400 miles if used for a lot of short runs.

    I’ve just had a B service done on my 350cdi which included renewing the air filters and it’s quite noticeable that the engine runs a little lumpy on cold start-up for a week or so until the car’s sensors adjust to the improved airflow, just done a 130 mile run and everything is now back to normal with a nice smooth tickover
     
  7. OP
    Georgi Yanchev

    Georgi Yanchev New Member

    Messages:
    6
    Likes Received:
    0
    Joined:
    May 7, 2019
    Your Mercedes:
    2010 E350 CDI
    Malcolm , It was there but not noticeable. Ill double check the air filters. Ive also done a 500miles trip to North of Wales and Back and problem is still present.
     
  8. phobos

    phobos Member

    Messages:
    18
    Likes Received:
    7
    Joined:
    Mar 25, 2019
    Your Mercedes:
    2007 S211 280Cdi Sport
    Hi there, can you record a video of the start of car with sound and the bonnet up? Any strange noises?
     
  9. Steve@Avantgarde

    Steve@Avantgarde Forum Supporter Authorised Forum Supporter

    Messages:
    6,808
    Likes Received:
    958
    Joined:
    Dec 8, 2009
    Location:
    Bristol/Somerset
    Your Mercedes:
    C220CDI AMG Line Premium, SLR McLaren Roadster, SL55 & C32AMG
    Sounds like an injector issue to me.
     
  10. Capra

    Capra Senior Member

    Messages:
    2,912
    Likes Received:
    907
    Joined:
    Jan 27, 2018
    Location:
    Gloucestershire
    Your Mercedes:
    W204 2013 C350 CDI Pan roof
    Did you call them?
     

Share This Page