Squeaking from belt or pulley

rezilient · 06-08-2016, 07:29 PM

Like the title says, my '11 135i has 85K on it and it's singing an awful tune. Limp-home mode is engaged I think because of this pulley or belt issue maybe causing oil pressure issues. Also popping codes P052B/P054B. Already cleaned the vanos solenoids. I would think it's a pulley but when I spray the belt the sound goes away entirely and idle smooths out. Anyone want to wager a guess before I take it into my mech?

seagrasser · 06-16-2016, 08:37 PM

I would guess bad bearing in alternator, but that is just a guess. Could be one of the pulleys also.

seagrasser · 06-16-2016, 08:44 PM

Codes seem to indicate cam shaft sensor is faulty.

see here

http://www.1addicts.com/forums/showthread.php?t=814810

06-08-2016, 07:29 PM	#1
rezilient Second Lieutenant 83 Rep 282 Posts Drives: 2015 M4 Cabriolet Join Date: Feb 2016 Location: ATL iTrader: (0)	Squeaking from belt or pulley - any guesses? Like the title says, my '11 135i has 85K on it and it's singing an awful tune. Limp-home mode is engaged I think because of this pulley or belt issue maybe causing oil pressure issues. Also popping codes P052B/P054B. Already cleaned the vanos solenoids. I would think it's a pulley but when I spray the belt the sound goes away entirely and idle smooths out. Anyone want to wager a guess before I take it into my mech? __________________ 2015 M4 Cabriolet DCT 2011 135i Coupe (sold) 2014 M235i (sold) 2002 M5 (sold)
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06-16-2016, 08:37 PM	#2
seagrasser Private 7 Rep 66 Posts Drives: E82 M sport Join Date: Sep 2013 Location: Lynnwood iTrader: (1)	I would guess bad bearing in alternator, but that is just a guess. Could be one of the pulleys also.
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06-16-2016, 08:44 PM	#3
seagrasser Private 7 Rep 66 Posts Drives: E82 M sport Join Date: Sep 2013 Location: Lynnwood iTrader: (1)	Codes seem to indicate cam shaft sensor is faulty. see here http://www.1addicts.com/forums/showthread.php?t=814810
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