535ix Bad Alternator Bearing?
#1
New Members
Thread Starter
Join Date: Nov 2017
Location: New Mexico
Posts: 4
Likes: 0
Received 0 Likes
on
0 Posts
My Ride: 535ix, wifemobile, stock
Model Year: 2011
535ix Bad Alternator Bearing?
I've been noticing some sounds that I can't pin down in my wife's 2011 BMW 535 ix with 107k miles. The best way that I can describe it is that it's kindof a whirring sound that follows the RPM band.
I listened to the alternator with a stethoscope with a rod on the end (backyard mechanics oscilloscope) and it does sound like the bearing in the alternator may be dragging a bit. There are also a few rattles at low RPMs between 1,000 and 1,800rpms.
I uploaded a video of the sound through different rev ranges. Has anyone here had a similar problem?
Thanks for reading/helping.
I listened to the alternator with a stethoscope with a rod on the end (backyard mechanics oscilloscope) and it does sound like the bearing in the alternator may be dragging a bit. There are also a few rattles at low RPMs between 1,000 and 1,800rpms.
I uploaded a video of the sound through different rev ranges. Has anyone here had a similar problem?
Thanks for reading/helping.
Thread
Thread Starter
Forum
Replies
Last Post
rparik01
E60 Discussion
10
11-22-2015 10:35 AM