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      04-10-2014, 12:18 AM   #23
fjork_duf
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When I took my car to the dealer (2011 E90) they said it was normal but couldnt tell me what it was.
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      04-10-2014, 12:19 AM   #24
fjork_duf
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Quote:
Originally Posted by MFL
I'm taking mine into the dealer for this tomorrow and I will followup with their findings.
I hope you find out what causes it so I can get the same fix. Here is to hoping your techs arent idiots.
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      04-11-2014, 10:11 AM   #25
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My guess would be belt tensioner.

My E46 used to do this when flat-shifted at redline or shifted quickly at lower engine speeds. New tensioner and belt while I was In There fixed it

Considering how quickly the DCT shifts even at part throttle wouldn't be surprised if it is causing too much rpm delta for the tensioners to cope with
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      04-13-2014, 02:18 PM   #26
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Quote:
Originally Posted by fjork_duf View Post
I hope you find out what causes it so I can get the same fix. Here is to hoping your techs arent idiots.
I had to reschedule it. Since CPO doesn't cover belts etc, I'm going to dress the belts up (lightly) and see if that goes away, it's not an ultimate fix, but it's a good way of figuring out where the sound is coming from.
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      04-19-2014, 09:37 AM   #27
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Started getting this squeak noise as well, I hope it's nothing serious.
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      06-05-2014, 12:16 PM   #28
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Quote:
Originally Posted by Richbot View Post
My guess would be belt tensioner.

My E46 used to do this when flat-shifted at redline or shifted quickly at lower engine speeds. New tensioner and belt while I was In There fixed it

Considering how quickly the DCT shifts even at part throttle wouldn't be surprised if it is causing too much rpm delta for the tensioners to cope with
I've got the squeak too. Master Tech rode in the car a few months back and said it sounded normal. I assured him that my friend's newer M3 (with less miles) did not make the noise. I'm going to take the car back in next month to keep my case going.

FYI - My e46 made a similar noise but it came from the rear. It turned out to be the guibo.
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