Humming/Groaning noise?!? Please help!!!

BlueBimmerJay · 07-06-2020, 04:55 PM

Ok so my 2011 328XI sedan just started making this weird noise. It goes with the RPMs and I took a video of it. Hopefully you can hear it. It just started doing this a week ago. I have no codes or warning lights. i-drive says everything is ok but it's annoying. I'm hoping someone in here has had this issue and knows what it is. She has 108,000 miles and drives like brand new. But this sound is driving me crazy. The sound in the video is what I'm talking about. Your not hearing the engine until the very end. Thanks in advance guys and girls!

Emilime75 · 07-06-2020, 06:08 PM

Have you inspected your serpentine belt, the tensioner, the idler pullies and the accessories driven by said serpentine belt?

BlueBimmerJay · 07-06-2020, 06:19 PM

Quote:

Originally Posted by Emilime75

Have you inspected your serpentine belt, the tensioner, the idler pullies and the accessories driven by said serpentine belt?

Quote:

Originally Posted by Emilime75

Have you inspected your serpentine belt, the tensioner, the idler pullies and the accessories driven by said serpentine belt?

I haven't done anything yet. I'm looking for ideas on what I should inspect first or if someone has ever had this issue that could know what it is.

BlueBimmerJay · 07-06-2020, 06:22 PM

Quote:

Originally Posted by Emilime75

Have you inspected your serpentine belt, the tensioner, the idler pullies and the accessories driven by said serpentine belt?

Quote:

Originally Posted by Emilime75

Have you inspected your serpentine belt, the tensioner, the idler pullies and the accessories driven by said serpentine belt?

Also whatever it is it sounds like it's coming from the driver side if that helps

Emilime75 · 07-06-2020, 06:22 PM

Alright, well you have your first idea to look into. Visually inspect the belt/s, if all looks OK, remove it/them(don't know what the 328 has, 335i is a single serpentine belt) and start the car. Is the noise still there?

BlueBimmerJay · 07-06-2020, 08:29 PM

Quote:

Originally Posted by Emilime75

Alright, well you have your first idea to look into. Visually inspect the belt/s, if all looks OK, remove it/them(don't know what the 328 has, 335i is a single serpentine belt) and start the car. Is the noise still there?

Quote:

Originally Posted by Emilime75

Have you inspected your serpentine belt, the tensioner, the idler pullies and the accessories driven by said serpentine belt?

Thank you. I'll do that this weekend

07-06-2020, 04:55 PM	#1
BlueBimmerJay Registered 0 Rep 4 Posts Drives: BMW 328xi Join Date: Jun 2020 Location: Lexington Kentucky USA iTrader: (0)	Ok so my 2011 328XI sedan just started making this weird noise. It goes with the RPMs and I took a video of it. Hopefully you can hear it. It just started doing this a week ago. I have no codes or warning lights. i-drive says everything is ok but it's annoying. I'm hoping someone in here has had this issue and knows what it is. She has 108,000 miles and drives like brand new. But this sound is driving me crazy. The sound in the video is what I'm talking about. Your not hearing the engine until the very end. Thanks in advance guys and girls! __________________ Jay
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07-06-2020, 06:08 PM	#2
Emilime75 Colonel 1209 Rep 2,476 Posts Drives: 2010 335i E92 LeMans Blue Join Date: Dec 2017 Location: Merica! iTrader: (1)	Have you inspected your serpentine belt, the tensioner, the idler pullies and the accessories driven by said serpentine belt?
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07-06-2020, 06:22 PM	#5
Emilime75 Colonel 1209 Rep 2,476 Posts Drives: 2010 335i E92 LeMans Blue Join Date: Dec 2017 Location: Merica! iTrader: (1)	Alright, well you have your first idea to look into. Visually inspect the belt/s, if all looks OK, remove it/them(don't know what the 328 has, 335i is a single serpentine belt) and start the car. Is the noise still there?
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