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.
Codes? Video? Boost leak tested?
Are you gonna eat that?
Codes P0112 and P0139, I'll see if I can get a video uploaded.
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?
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?
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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