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-   -   Strange noise coming from engine (http://forum.e46fanatics.com/showthread.php?t=969938)

Bigtyrant 02-07-2013 01:17 PM

Strange noise coming from engine
 
I have a 01 325ci this noise started a month back and i look around but i cant find anyone else with the same problem maybe someone else has had this same problem
Here is a link to a video with the sound

http://youtu.be/lG3zOf7mlns

tommy d 02-14-2013 07:27 AM

It's either your belt tensioner/idler pulley or both. You should replace both at the same time. Check the DIY's on how to do this.

Gussers1 02-22-2013 04:49 PM

Sounds like a bad tensioner

bmw murder 02-22-2013 05:10 PM

1 Attachment(s)
I had a loud schreeching noise that was intermittent and did not increase with engine speed. One day the noise went away. The next day disaster struck. Lost my belt and 2 pulleys. Hydraulic tensioner was fine but the one pulley was missing the other was bitten up.Hope this helps

Sent from my LG-P999 using Bimmer App

Bandit4077 02-24-2013 12:01 AM

either you have a mouse under your hood or like they said, check your belts, pulleys, and tensioner. you could have oil on your belt, or it could be cracked. it could also be something that's become missaligned. PS pump, alternator, AC compressor. that's my best guess.


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