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      06-08-2013, 08:13 AM   #3
Egeira
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Drives: BMW 118i F20 2012
Join Date: Jun 2013
Location: Sweden

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Engine rattle on low revs

I'm both sad for your sake and glad that I'm not alone. It's been real tricky finding anyone else experiencing this. I watched your video from another thread and it is spot on.

http://youtu.be/TdGR8wy-4fk
  • A little more distinct when when cold but not much better when warm.
  • It excels around 1500 rpm going uphill and stutters a bit back and forth.
  • You can provoke the sound a bit by gently accelerating around 1500 rpm.
  • Only happens under acceleration (can't reproduce the sound on neutral).

I visited my dealer regarding this and they dismissed me with "it's nothing to worry about". Frankly I dont care if it is nothing to worry about, it still makes the ride sound cheap as hell in combination with the squeeking doors...

I'm starting to suspect the turbo heat shield resonating and causing these sounds. Did you find a solution to this yet?

I'm thinking this might be something that have been adressed in later f20's since I see no one complaining about it and the only one that I have come across is you which also have an early f20. Mine is a 118i Urban from September 2011. Apprently something is changing in 2012/01... Maybe they've forgot the 140 Hz vibration absorber.

http://www.realoem.com/bmw/showparts...&fg=55&lang=en

I'm going to try and rig a mic for a recording this week and go one more round with the dealer. Hope you found a solution to this and it's now running good Please let me know either way.
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