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Thread: 07 X3 3.0si idles rough after hitting high speed bump

  1. #1
    Join Date
    Jun 2019
    Location
    Lake City, FL
    Posts
    5
    My Cars
    2007 BMW X3 3.0si

    07 X3 3.0si idles rough after hitting high speed bump

    So I took a corner and right after I hit an extremely high speed bump and straight away my car was noisy. Now when I start it it is runs rough. After it warms up it settles down, but idles rough at traffic lights. If I put it in neutral at light it settles down. I also feel it in the gas pedal sometimes like it is bogging down. I hope you know what I mean, you can feel like a tapping, not a vibration.
    So here are prior to changing out both Vanos: P0171, P0597, P0015. Here are codes after changing out Vanos: P0012, P0015, P0597. Note: I've had the P0597 ever since I changed out upper coolant hose. I think I didn't get the coolant diluted enough, but don't have equipment to check.
    Anyhow any suggestions as to simple things I may be able to check on my own. Thank you

  2. #2
    Join Date
    Feb 2011
    Location
    Saskatoon, Canada
    Posts
    1,509
    My Cars
    '88 320i Mtech2; 2004 X3
    - for the rough idle after the bad bump..... I would be checking for something cracked or dislodged... like the air boot... perhaps some other vacuum hose
    ... forty-three years of driving before I get behind the wheel of a BMW .... and I am thinking, "why did it take me so long?"
    ... and then after another 4 years I can't believe that I have two of them !!

  3. #3
    Join Date
    Jun 2019
    Location
    Lake City, FL
    Posts
    5
    My Cars
    2007 BMW X3 3.0si
    Thank You

  4. #4
    Join Date
    Jan 2016
    Location
    Ca
    Posts
    6,981
    My Cars
    2001 525it
    Check the aluminum bolts that hold the motor mount arm to the block they break pretty easy

  5. #5
    Join Date
    May 2009
    Location
    Greenville, SC USA
    Posts
    2,648
    My Cars
    e39 M5 e39 540i6 e83 e53
    I broke a motor mount bracket on my e36 after hitting a suprise speed bump.. Broke right in half. Made a bad engine vibration..

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