View Single Post
      05-01-2018, 05:10 PM   #90
BimmerAg
Lieutenant
BimmerAg's Avatar
United_States
425
Rep
545
Posts

Drives: 2011 135i
Join Date: May 2017
Location: San Antonio, TX

iTrader: (0)

Quote:
Originally Posted by T_EV View Post
I recently ordered and replaced the belt, tensioner and idler pulleys (the package seen here from ECS Tuning) on my 2011 135i and I still have a belt squeak at around 1500+ RPM's. I know it's the belt because when I spray water on the v side of the belt while it is running, the noise temporarily goes away. I've re-ordered another tension pulley from ECS thinking the one that they sent was faulty (unlikely) and I've done the OFHG. There is no visible sign of oil on the belt or anywhere around the belt. Any ideas why I'm still getting a squeak?

Also have installed OEM alternator and AC compressor in the last 1k miles that didn't solve the problem.
Another thread mentioned that the bolts on the power steering pump can loosen and back out. Like this:

Maybe check that?
__________________
2011 BMW 135i ///M-Sport, DCT
Bilstein B12 kit, Dinan camber plates, M3 front control arms, Whiteline poly RSFB, MHD Stage 1, cp-e Charge Pipe, H&R Front sway bar, BMW performance diffuser
Appreciate 3
Dackelone10527.50
T_EV16.50