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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > VIDEO: Buzzing / humming noise near passenger side of engine



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      06-21-2015, 02:43 PM   #1
19E92
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Exclamation VIDEO: Buzzing / humming noise near passenger side of engine

VIDEO:


Title says it all, lately I've been hearing this buzzing / humming noise on the left side of the engine. The first time I ever heard it was when I got a 30FF code due to what I believe were incorrect JB4 settings. I also had a 3EF4 code (thermostat) but I believe it was just a fluke.

The noise sounds like it's coming from the boost solenoids.

Is this anything to worry about?

Has anyone experienced this noise before?

Thanks
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      06-21-2015, 04:34 PM   #2
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Water pump??? Could be going out on you.
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      06-21-2015, 04:35 PM   #3
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Quote:
Originally Posted by 19E92
VIDEO:


Title says it all, lately I've been hearing this buzzing / humming noise on the left side of the engine. The first time I ever heard it was when I got a 30FF code due to what I believe were incorrect JB4 settings. I also had a 3EF4 code (thermostat) but I believe it was just a fluke.

The noise sounds like it's coming from the boost solenoids.

Is this anything to worry about?

Has anyone experienced this noise before?

Thanks
Boost solenoids. Replace both if you have never touched them. There are multiple part number revisions for them.
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      06-22-2015, 10:31 AM   #4
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Quote:
Originally Posted by j1gilles View Post
Water pump??? Could be going out on you.
Already had the pleasure of dealing with that lol. Replaced about 7,000 KMS ago.

Quote:
Originally Posted by Dmacc View Post
Boost solenoids. Replace both if you have never touched them. There are multiple part number revisions for them.
Any harm in just replacing the faulty one for the moment?

Is there any chance this is causing my wastegates to rattle a little more than usual? Could this be affecting my boost? The car felt a little sluggish the last couple of times that I drove it, but I just assumed it might be the usual heatsoak that I experience..
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      06-22-2015, 11:35 AM   #5
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Quote:
Originally Posted by 19E92
Quote:
Originally Posted by j1gilles View Post
Water pump??? Could be going out on you.
Already had the pleasure of dealing with that lol. Replaced about 7,000 KMS ago.

Quote:
Originally Posted by Dmacc View Post
Boost solenoids. Replace both if you have never touched them. There are multiple part number revisions for them.
Any harm in just replacing the faulty one for the moment?

Is there any chance this is causing my wastegates to rattle a little more than usual? Could this be affecting my boost? The car felt a little sluggish the last couple of times that I drove it, but I just assumed it might be the usual heatsoak that I experience..
Yes this could be exactly why.
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