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  1. #1
    Join Date
    Feb 2019
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    CA
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    My Cars
    2011 X5 35d

    squeel and diesel smell

    I have a 2011 X5 35d. I have a squeal at 3/4 throttle when its cold, goes away after engine warms up. I also have a diesel smell in the cabin when cold only. Dealer having a difficult time diagnosing. Replaced pulley and tensioner to no avail. They have checked EGR and they say that is fine. Any ideas?

  2. #2
    Join Date
    Jan 2007
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    There was a service bulletin about a cold-start squeal on E90 diesel from the A/C belt. I looked up the bulletin, but it doesn't apply to E70 diesels. But maybe it's the same issue, I can't say for certain. I copied a portion of it below. And as far as you're smelling diesel exhaust, the only way is if there's a leak in either the EGR cooler, or somewhere under the hood, and then the untreated exhaust gets drawn into the cabin. They need to look harder. Oh, and don't expect to change the A/C belt on your own. It requires BMW special tools, and is a giant pain in the ass.


    procedure


    1. Duplicate the issue.
    2. Replace the A/C compressor drive belt with the part number listed below.


      Note: The replacement part is the E63 A/C drive belt.

      The part number listed for this vehicle in ETK is not the correct part for
      this repair, request and invoice this item by the part number specified and
      listed below.


      Performing a part number look-up in ETK by VIN or model will result with
      the wrong part being installed.

    3. Refer to Repair Instructions REP 11 28 050 (Removing and
      installing/replacing the drive belt for A/C compressor).




    parts information

    Part Number Description Quantity
    11 28 7 520 177 Ribbed V Belt (4PK824 – see the repair procedure section) 1
    ASE and BMW Master Certified Technician

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