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Thread: '07 335i - need advice please

  1. #1
    Join Date
    May 2018
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    335i

    '07 335i - need advice please

    My 335i started have some issues that resulted in multiple codes and replacement of crankshaft and camshaft position sensors then Vanos solenoids, which fixed everything except a noise upon acceleration up to about 3000 rpm then its gone. The noise sounds like a jet engine so thought it was likely air intake/vacuum of some sort. Finally got Camshaft position timing and oxygen sensor circuit slow response codes. I feel like this is likely related to previous DIY repairs I mentioned but no clue where to start looking, any suggestions? Only other thing to note is an oil change is due. Any help much appreciated.

  2. #2
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    '08 E90 335xi manual
    Codes? Video? Boost leak tested?
    Are you gonna eat that?

  3. #3
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    Codes P0112 and P0139, I'll see if I can get a video uploaded.

  4. #4
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    '08 E90 335xi manual
    Start by
    1. Getting a scanner that can read BMW codes. A $10 K+DCAN cable from eBay and a free ISTA+ download is the cheapest and arguably best option.
    2. Making or buying a boost leak tester.
    Are you gonna eat that?

  5. #5
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  6. #6
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    '08 E90 335xi manual
    Yikes. Could be charge pipe, etc. Judging by the generic OBD translations, the codes are probably due to separate problems. O2 and/or IAT sensors. Pull the BMW codes, smoke test and/or boost leak test.
    I wouldn't advise driving it before it's fixed.
    Are you gonna eat that?

  7. #7
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    Thanks, I will try that. There's a sound you can't hear on the video, it's like a rush of air right before the noise stops. I seriously hope we left something loose or messed up something small when we had it apart for the other repairs. Thanks for your time though.

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