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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N57 / M57 Turbo Diesel Discussions - 335d > Harmonic Balancer second failure



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      09-09-2020, 06:18 PM   #1
montr
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Harmonic Balancer second failure

The harmonic balancer was first replaced by the dealer in 2015 at 67K miles.
It is failing again at 125K miles. Should I replace it again with an OEM pulley that seems to last only 62K miles or try something else, like the fluidampr?

Any good experience with this one:
https://www.tunemyeuro.com/fluidampr...35d-2009-2013/

Thanks
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      09-10-2020, 10:34 AM   #2
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Quote:
Originally Posted by montr View Post
The harmonic balancer was first replaced by the dealer in 2015 at 67K miles.
It is failing again at 125K miles. Should I replace it again with an OEM pulley that seems to last only 62K miles or try something else, like the fluidampr?

Any good experience with this one:
https://www.tunemyeuro.com/fluidampr...35d-2009-2013/

Thanks
FAI automotive dampener for m57. Theres a certain guy that sells this for our 335ds, google that and you should find him.
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      09-10-2020, 11:47 AM   #3
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Around January 2019, I proactively changed my OEM damper at ~67,xxx miles to a Fluidamper from tunemyeuro. I'm now at about 72,xxx miles and no issues.
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      09-11-2020, 09:24 AM   #4
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I can't decide between the FAI and Fluidamper. I'm sure that decision will become imminent soon.
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      09-11-2020, 09:52 AM   #5
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I had no idea there was so much going on inside one of these! See the section half way down the page:
https://*************************/pr...15428796317786 Damn censorship! w h i t b r e a d p e r f o r m a n c e . c o m
Thanks for the heads-up that they're a good alternative to OE.

I'm getting a quiet but definite knock around 1000-1500rpm. I can only hear it faintly when driving on smooth road surfaces, but it's definitely there and if anything it's getting slowly worse. Is that likely to be caused by the damper going bad? M57TU2 330d, 138k miles.

Also, I remember from putting the stretch belt for the HPAS on mine (~10k miles ago) that it seemed excessively tight. I'm confident it was the right part, and was either from Conti or Gates (can't remember)...could that have contributed to early/accelerated failure?
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      09-11-2020, 01:11 PM   #6
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I'm at a hundred and fifty thousand miles and on my third
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      09-11-2020, 09:30 PM   #7
montr
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Quote:
Originally Posted by Tambohamilton View Post
I had no idea there was so much going on inside one of these! See the section half way down the page:
https://*************************/pr...15428796317786 Damn censorship! w h i t b r e a d p e r f o r m a n c e . c o m
Thanks for the heads-up that they're a good alternative to OE.

I'm getting a quiet but definite knock around 1000-1500rpm. I can only hear it faintly when driving on smooth road surfaces, but it's definitely there and if anything it's getting slowly worse. Is that likely to be caused by the damper going bad? M57TU2 330d, 138k miles.

Also, I remember from putting the stretch belt for the HPAS on mine (~10k miles ago) that it seemed excessively tight. I'm confident it was the right part, and was either from Conti or Gates (can't remember)...could that have contributed to early/accelerated failure?
The failure is that the rubber in the pulley fail and it spins freely. You will smell burned rubber, A/C, power steering and alternator is not working.
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      09-12-2020, 01:13 AM   #8
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But a number of people say that they have cured knocking noises by replacing the damper pulley?
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      09-12-2020, 09:14 AM   #9
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Quote:
Originally Posted by Tambohamilton View Post
But a number of people say that they have cured knocking noises by replacing the damper pulley?
I know it fixed my knock issue. I am on #3
#1 OE/70K-rubber tore
#2 BMW/115K-rubber tore
#3 BMW/159K-knock issue.

The last one was FCP warrantied so either upgrade or buy from FCP and you only have to pay shipping.
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      09-12-2020, 07:37 PM   #10
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OE damper failed last winter on wife's X5d 177,000 miles. Bought Corteco from FCP. Maybe it'll last another 177,000 miles. I know the engine will. Fluidampr is superior, just didn't want to mess with dialing it in. Plus Andrew is a good dude. I'll get that for my 335
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      09-13-2020, 01:14 AM   #11
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Good Luck with that Dampr.
Had my original fail at 65k, then Valeo replacement failed at 94k.
Fluidampr was replaced under notice for manufacturing defect at 120k.
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      09-15-2020, 11:13 AM   #12
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Hey look at people all answering questions on e90post and stuff.

Take that Facebook.
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      12-31-2023, 12:14 AM   #13
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At 11Y and 115K my E70 factory vibration damper is about to give up.

What is the community vote for end of 2023:
- FAI
- Fluidamper
- Corteco
- Genuine

Thanks in advance for your input
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      01-01-2024, 09:50 AM   #14
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Corteco, clutched alternator pulley and full send.
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      01-15-2024, 03:25 PM   #15
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I replaced mine with Corteco. I noticed it had a different, slightly updated design compared to the bmw original.
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      02-10-2024, 05:24 PM   #16
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Quote:
Originally Posted by lnxguy View Post
Corteco, clutched alternator pulley and full send.
This^^
Clutched alternator pulley should be on everyone's "First things to do" list.
If this came stock we wouldn't have all these HB issues.
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      02-14-2024, 02:39 PM   #17
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Get the whitbread FAI damper and the clutched alternator pulley and never look back.
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