Quote:
Originally Posted by emiliogaines
Hi all!
I had this sort of grinding noise appear on my 2007 320i (N46).
I have talked to some people but no one can figure out exactly what the cause is and I haven't found a single thread where it makes this specific sound.
The funny thing is however that it ONLY makes this sound BELOW 1K rpm and ONLY DURING LOAD. For example starting in first gear or being in too low rpm for that specific gear. (< 1K).
It doesn't make this sound always either, some days it's not there at all.
I can prevent the car from making the sound if I start while keeping the car around 1K rpm as said above.
The video makes it sound a bit more screaching than it actually is but you get the point.
I'm using this car daily and has driven it quite far after this sound emerged, it's not something new.
Anyone have dealt with this specific sound before?
I already have changed cam chain tensioner. |
The one way clutch on the alternator pulley can cause really loud noises at idle on this engine. I have replaced quite a few of them. You can buy it separately from the alternator. Doesn't sound quite the same as your video though.