Belt squealing noise

abuzar1 · 07-22-2023, 04:17 PM

2012 X3 28i. I started to hear an intermittent screeching noise from the belt. I thought maybe its the belt maybe its the tensioner pulley. I replaced them both.

The noise is still here. Its only present after the car is warmed up but only on the initial start. So if I cold start the car its fine and I drive to the store. When I come back from grocery shopping and start it again it starts to screech like the video below. Turning the AC on or off doesn't do anything. If I turn the car off and turn it back on again the noise goes away until I drive somewhere else and turn it off for a few mins. Then the next start it will have the noise till I start the car and turn it off again.

The only other thing the belt runs is the alternator or AC compressor. Since turning the AC compressor on and off didn't do much I'm thinking alternator? All the pulleys spin freely by hand and don't make any noise.

https://youtube.com/shorts/L6JwUCftjhs?feature=share

frisbeeguy · 07-22-2023, 04:27 PM

Ah, the eternal mystery of the elusive Mickey Mouse, trapped within the confines of your heavy BMW. It seems that his mischievous squeaks and squeals have transformed him into a cornered mouse, desperately seeking an escape from the clutches of your engine.

But fear not, dear driver, for this is no ordinary mouse. It's as if Mickey himself has taken on the role of a secret agent, navigating the intricate maze of mechanical components, leaving behind a symphony of sound in his wake.

So, as you cruise down the road, imagine your heavy BMW as a high-speed rodent sanctuary, with Mickey Mouse orchestrating a symphony of noise like a maestro trapped in a cage of metal and rubber.

Embrace the whimsical melody, my friend, and let the cornered mouse within your engine remind you that even in the world of automotive quirks, there's always room for a dash of Disney magic!

abuzar1 · 07-22-2023, 06:34 PM

I'm from Orlando I think I've had enough of Mickey Mouse!

BMW JA · 07-22-2023, 10:46 PM

So has Minnie!

abuzar1 · 01-16-2024, 02:47 PM

Just to update you guys it was the VVT solenoid. I'm posting this update as a lot of threads just go unresolved for future people reading.

07-22-2023, 04:17 PM	#1
abuzar1 New Member 8 Rep 6 Posts Drives: 2009 328i Join Date: May 2023 Location: Florida iTrader: (0)	Belt squealing noise 2012 X3 28i. I started to hear an intermittent screeching noise from the belt. I thought maybe its the belt maybe its the tensioner pulley. I replaced them both. The noise is still here. Its only present after the car is warmed up but only on the initial start. So if I cold start the car its fine and I drive to the store. When I come back from grocery shopping and start it again it starts to screech like the video below. Turning the AC on or off doesn't do anything. If I turn the car off and turn it back on again the noise goes away until I drive somewhere else and turn it off for a few mins. Then the next start it will have the noise till I start the car and turn it off again. The only other thing the belt runs is the alternator or AC compressor. Since turning the AC compressor on and off didn't do much I'm thinking alternator? All the pulleys spin freely by hand and don't make any noise. https://youtube.com/shorts/L6JwUCftjhs?feature=share
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07-22-2023, 04:27 PM	#2
frisbeeguy Private First Class 65 Rep 195 Posts Drives: BMW,Tesla, etc. Join Date: Jun 2017 Location: Cincinnati, OH iTrader: (0) Garage List 2021 Tesla Model 3 [0.00] 2014 BMW X3 xDrive35i [0.00]	Ah, the eternal mystery of the elusive Mickey Mouse, trapped within the confines of your heavy BMW. It seems that his mischievous squeaks and squeals have transformed him into a cornered mouse, desperately seeking an escape from the clutches of your engine. But fear not, dear driver, for this is no ordinary mouse. It's as if Mickey himself has taken on the role of a secret agent, navigating the intricate maze of mechanical components, leaving behind a symphony of sound in his wake. So, as you cruise down the road, imagine your heavy BMW as a high-speed rodent sanctuary, with Mickey Mouse orchestrating a symphony of noise like a maestro trapped in a cage of metal and rubber. Embrace the whimsical melody, my friend, and let the cornered mouse within your engine remind you that even in the world of automotive quirks, there's always room for a dash of Disney magic!
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07-22-2023, 06:34 PM	#3
abuzar1 New Member 8 Rep 6 Posts Drives: 2009 328i Join Date: May 2023 Location: Florida iTrader: (0)	I'm from Orlando I think I've had enough of Mickey Mouse!
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07-22-2023, 10:46 PM	#4
BMW JA Private 29 Rep 83 Posts Drives: 13 X3, 73 454 Vette, Join Date: Dec 2019 Location: Green Oak Michigan iTrader: (0)	Reply! So has Minnie!
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01-16-2024, 02:47 PM	#5
abuzar1 New Member 8 Rep 6 Posts Drives: 2009 328i Join Date: May 2023 Location: Florida iTrader: (0)	Just to update you guys it was the VVT solenoid. I'm posting this update as a lot of threads just go unresolved for future people reading.
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