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      05-10-2020, 08:33 AM   #4
blumagic
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Drives: 2014 328i xdrive , 2013 SHO
Join Date: Mar 2019
Location: West Lafayette, IN

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Quote:
Originally Posted by Domotron View Post
No noise on free-rev or idle only makes that noise when driving between 0-20mph. Belt and tensioner have been replaced.
It is tough from the video to narrow down.

The reason I asked if the replacement parts are oem is because I have had many experiences where non-oem belts and tensioners make noise. More so non-oem belts.

It does kind of have a belt sound from the video. I’d start by turning on the AC at idle to see if the noise happens with that load on the belt.

I’d look for vibrations on all the pulleys, specifically the new tensioner.

loosen the tensioner and check the pulleys for play

Since the problem started when new parts were installed I would doubt it is coincidence so I’d be focused on those parts.
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