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E46 M3 (2001-2006) Engine: S54 - Max Hp: 333 hp at 7,900 rpm / 262 lb/ft at 4,900 rpm
Total Produced: 45,000+ - Years Produced: 2001 to 2006.


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Old Sat, Oct-13-2018, 07:06:34 PM   #1
grke36m3
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Default Bad alternator bearing?

Noticed this odd sound the other day. I made a short video at first I thought it might of been vanos related but all of that was redone a little over 2 years ago. From bolts to seals, upper guide and anti rattle kit. The sound is only noticeable on cold morning starts then goes away. It is a lot louder in the video then in person.


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Old Sat, Oct-13-2018, 08:13:16 PM   #2
L0ADED
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Default Re: Bad alternator bearing?

Sounds like it.
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Old Sat, Oct-13-2018, 08:40:57 PM   #3
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Default Re: Bad alternator bearing?

Take off the belt and check for play
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Discussing Bad alternator bearing? in the E46 M3 (2001-2006) Forum - Engine: S54 - Max Hp: 333 hp at 7,900 rpm / 262 lb/ft at 4,900 rpm
Total Produced: 45,000+ - Years Produced: 2001 to 2006. at BMW M3 Forum.com (E30 M3 | E36 M3 | E46 M3 | E92 M3 | F80/X)