Classic idler pulley issue?

Ariakas · 05-07-2021, 02:26 PM

The noise from this during cold start, goes away when engine warms up.

Safely assume it's the upper/lower idler pulleys?? Tensioner and belt were replaced by previous owner from looking at dealer service records.

Ariakas · 06-02-2021, 11:32 AM

Just an update if anyone interested. It was related to a t-bolt on intercooler that was rubbing the serpentine belt and scoring it. Adjusted the t-bolt clamp and replaced belt, noise gone.

05-07-2021, 02:26 PM	#1
Ariakas New Member 20 Rep 24 Posts Drives: 2009 BMW 335i xDrive Join Date: Dec 2018 Location: Canada iTrader: (0)	Classic idler pulley issue? The noise from this during cold start, goes away when engine warms up. Safely assume it's the upper/lower idler pulleys?? Tensioner and belt were replaced by previous owner from looking at dealer service records.
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06-02-2021, 11:32 AM	#2
Ariakas New Member 20 Rep 24 Posts Drives: 2009 BMW 335i xDrive Join Date: Dec 2018 Location: Canada iTrader: (0)	Just an update if anyone interested. It was related to a t-bolt on intercooler that was rubbing the serpentine belt and scoring it. Adjusted the t-bolt clamp and replaced belt, noise gone.
	Appreciate 2 stewbets454.00 Bimmer_Engineer1051.00 Quote

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