Hello everyone. My name is evan. I'm a usual here on the forums.
I have owned a 135i 2011 n55 for well over 2 years now.
I've had the DREADFUL SERPENTINE BELT SQUEEL.
Like 5 months into ownership it started happening faintly.
I replaced belt and pulley's but noise still kept on.
8 months into ownership my belt snapped, got sucked in through the vibration
dampner pulley and cause engine failure stopped timing and seizing up.
Fast forward 4 or 5 months when new block is in. Car runs amazing with new motor
But that same f****** noise is back.
Here's a list of everything I've replaced over the last 2 years to try and solve that
squeel.
Not in order. Most in which where fine and never needed replacing.
-Alternator
-Compressor
-Waterpump
-Vibration Dampner
-belt tensioner pulley
-basically all pulleys were replaced with like 4 belts.
Anyone with insight pleasee help!
Update I held my stethoscope to every pulley and heard the source coming from
The deflection pulley(11287578675).
Replaced it and sure enough noise is still there. When holding the stethoscope on the new one... it sounds the same.. wtf is going on here.
HELP!