Whining sounds from alternator or power steering

tvran23 · 12-02-2016, 04:06 PM

My 2011 335D has developed a whining type sound that appears to be coming from the alternator. I have read some stuff that the PS could also be a source. It does seem to make more noise at low speed when i turn the wheel. If either, is this something that is covered under CPO? Thank you.

BB_cuda · 12-02-2016, 06:24 PM

Use automotive stethoscope on both to narrow it down. Check fluid level in PS reservoir. Pumps typically whine if low on fluid.

tvran23 · 12-03-2016, 03:30 PM

The PS reservoir was almost empty and noticed fluid leak drops now under the car. Not sure if pump or a hose. Hopefully covered under my CPO. Thanks.

BB_cuda · 12-03-2016, 06:31 PM

Good luck with the repair.

12-02-2016, 04:06 PM	#1
tvran23 New Member 0 Rep 6 Posts Drives: 2011 335d Join Date: Aug 2015 Location: Chicago iTrader: (0)	Whining sounds from alternator or power steering My 2011 335D has developed a whining type sound that appears to be coming from the alternator. I have read some stuff that the PS could also be a source. It does seem to make more noise at low speed when i turn the wheel. If either, is this something that is covered under CPO? Thank you.
	Appreciate 0 Tweet Quote

12-02-2016, 06:24 PM	#2
BB_cuda Brigadier General 764 Rep 3,555 Posts Drives: 2011 335D Msport, 2013 X5D Join Date: Nov 2011 Location: Clear Lake, Texas iTrader: (0)	Use automotive stethoscope on both to narrow it down. Check fluid level in PS reservoir. Pumps typically whine if low on fluid.
	Appreciate 0 Quote

12-03-2016, 03:30 PM	#3
tvran23 New Member 0 Rep 6 Posts Drives: 2011 335d Join Date: Aug 2015 Location: Chicago iTrader: (0)	The PS reservoir was almost empty and noticed fluid leak drops now under the car. Not sure if pump or a hose. Hopefully covered under my CPO. Thanks.
	Appreciate 0 Quote

12-03-2016, 06:31 PM	#4
BB_cuda Brigadier General 764 Rep 3,555 Posts Drives: 2011 335D Msport, 2013 X5D Join Date: Nov 2011 Location: Clear Lake, Texas iTrader: (0)	Good luck with the repair.
	Appreciate 0 Quote