N54 belt squealing

white08135i · 09-26-2013, 10:28 PM

Hey dudes. So I replaced my drive belt. Now when engine warms up it squeals when accelerating. In neutral or in d. The more I press the accelerator the louder it squeals. Pulleys seem to be fine so my guess would be the tensioner is not holding up well?

uaizaz · 09-27-2013, 02:10 AM

Facing the same problem looking forward to a response. Mine does so when the engine is colder.

Chriztofor · 09-27-2013, 09:52 AM

Replace the tension pulley and idler pulley. Search, there is a DIY on here. Note: If there is not enough tension on the belt it will slip and squeak.

white08135i · 09-27-2013, 09:55 AM

Quote:

Originally Posted by Chriztofor

Replace the tension pulley and idler pulley. Search, there is a DIY on here. Note: If there is not enough tension on the belt it will slip and squeak.

So it's a possibility that within time plastic pulleys wear out? Could it be the spring on the tensioner? I noticed when the car is cold it doesn't squeal, but 2-3 minutes into driving it starts to make the noise. I'm thinking when tensioner gets to a certain temp it fails to hold ?

09-26-2013, 10:28 PM	#1
white08135i Captain 43 Rep 638 Posts Drives: 08e90335i Join Date: Sep 2012 Location: Norcal iTrader: (10)	N54 drive belt Hey dudes. So I replaced my drive belt. Now when engine warms up it squeals when accelerating. In neutral or in d. The more I press the accelerator the louder it squeals. Pulleys seem to be fine so my guess would be the tensioner is not holding up well?
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09-27-2013, 02:10 AM	#2
uaizaz Private 7 Rep 94 Posts Drives: 335xi Join Date: Jan 2012 Location: Canada iTrader: (0) Garage List 2012 335i [0.00] 2007 BMW 335xi [0.00]	Facing the same problem looking forward to a response. Mine does so when the engine is colder.
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09-27-2013, 09:52 AM	#3
Chriztofor Colonel 103 Rep 2,783 Posts Drives: '06 325i and '13 X5 Join Date: Feb 2010 Location: Chicago Burbs iTrader: (1)	Replace the tension pulley and idler pulley. Search, there is a DIY on here. Note: If there is not enough tension on the belt it will slip and squeak. __________________ If no codes are being thrown use Chevron Techron fuel injector cleaner (concentrate). It solves rpm fluctuating upon cold start-up. Also, for most BMW problems start off by scanning your car with the Peake Research Tool. It contains the actual BMW codes. If you want to register a newly installed battery for free (just buy a $10 cable) and google/download BMWLogger
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