Moaning Noise coming from N54 Engine (On and off...) What could it be??

scott135i · 01-29-2011, 12:29 AM

Please check out the video below. It is from tonight, from my mother's 2008 135i with 22k on the odometer... . I pulled over to hear what the noise was, popped the hood, and heard the noises.... WTF could it be? Something common or obvious? There is no check engine light on, and the car seems to be running perfectly.

I need to check for codes later this weekend...

Experts.... anything?

Javier · 01-29-2011, 12:51 AM

it's hungry

vase330 · 01-29-2011, 01:12 AM

That shit had me laughing so hard! WTF? Never heard anything like that on any car let alone BMW.

zmt · 01-29-2011, 01:55 AM

I've heard the exact same noise on my car! No idea what it is, but I'd sure like to figure it out. Mine was much more periodic though, like 3 seconds of "mooooan" and then 5-6 off, rinse/repeat 3-4 times. I've only heard it twice and I can't pinpoint what I was doing or the state of the car when it happened other than it was at idle or crawling. Anyone have any ideas?

Bakeme521 · 01-29-2011, 02:34 AM

hahahah I wish I knew and could help. It sounds like it ate some mexican and it is ripping a big one.

jake213 · 01-29-2011, 09:48 AM

not to good with the e90s yet but is there a secondary air pump on that side? purge valve there? do the wastegates have something they do at idle for emissions? sounds like some sort of motor or valve pulsing.

themyst · 01-29-2011, 10:02 AM

Wastegate solenoid is taking a dump, you'll throw 30ff codes when it goes to shit. Dealer it.

JoosyJoos · 01-29-2011, 11:30 AM

You've got a wookie in your engine... damn wookies.

GQ335i · 01-29-2011, 01:15 PM

Sounds like it's hungry for a Cheeseburger! Sorry man, first time I've heard that on a BMW. Put that warranty to good use!

**335i** · 01-29-2011, 02:05 PM

try obd reader

scott135i · 01-29-2011, 05:52 PM

My first guess was a wastegate/solenoid related issue, or some vacuum line... scanning for codes tomorrow, and appt for service on Friday. Will post back w/ the results of each

MKE_M3 · 01-29-2011, 06:49 PM

before listening I was going to guess that it could be the water pump that cycles fluid through the turbo to cool it. That runs after the car is turned off if the engine temp is high enough. It could be that, but its tough to tell

MusclezMarinara · 01-29-2011, 06:56 PM

Bring it in to the dealer thats why theres warranty

WilliamE92 · 01-30-2011, 11:12 AM

Do you have a tune installed?

Slidewayz · 01-30-2011, 11:56 AM

your N54 has need. Needs. NEEDS, DAMMIT !!!

If you don't satisfy your n54 it will look elsewhere...I'm just sayin'...

vase330 · 01-30-2011, 12:22 PM

Bad table manners burping like that!

stickz23 · 09-12-2012, 12:49 AM

Anyone fix this sound.

I noticed this sound for the first time tonight and researched up on it.

JamesM3M5 · 09-12-2012, 07:51 AM

Could it also be the PCV vent pipe at the back of the valve cover? There should be some sort of pressure/vacuum limiting system built into the PCV inside the valve cover, and it could be fluttering.

Otherwise put your hand on each solenoid to see whether it's buzzing. Odd sound indeed.

landman2k1 · 09-12-2012, 11:57 AM

Quote:

Originally Posted by JoosyJoos

You've got a wookie in your engine... damn wookies.

Most people think that exhaust drives the turbos. Not true! It's wookies! Not sure why yours are so angry though.

The Ghost · 09-12-2012, 10:56 PM

I've had two 335's and they both did that (it cycles on periodically, but not as frequent as yours). I assumed it was the water pump.

e90328i · 09-12-2012, 11:02 PM

mine does this on cold starts for 20-30 seconds and its not that loud and goes away, pretty sure its a pump cycling does it do it all the time or just on cold starts?

stickz23 · 09-14-2012, 10:05 AM

I'm assuming all the time ( with the exceptions of the pause periods every few seconds) i'll be monitoring it heavily.

I have noticed the sound when I'm up to temperature and at idle.

01-29-2011, 12:29 AM	#1
scott135i Colonel 355 Rep 2,080 Posts Drives: 2020 X5 M50i Join Date: Feb 2009 Location: NYC Metro iTrader: (12)	Moaning Noise coming from N54 Engine (On and off...) What could it be?? Please check out the video below. It is from tonight, from my mother's 2008 135i with 22k on the odometer... . I pulled over to hear what the noise was, popped the hood, and heard the noises.... WTF could it be? Something common or obvious? There is no check engine light on, and the car seems to be running perfectly. I need to check for codes later this weekend... Experts.... anything?
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01-29-2011, 12:51 AM	#2
Javier Major 80 Rep 1,109 Posts Drives: 335i E92 Join Date: Nov 2006 Location: Puerto Rico iTrader: (0)	it's hungry __________________ 2007 328i Crimson Red SOLD 2010 335i MSport AW E92
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01-29-2011, 01:12 AM	#3
vase330 Colonel 102 Rep 2,760 Posts Drives: 19 E63S; 15.5 RangeRover ATB Join Date: Jan 2007 Location: Arlington, Va iTrader: (1)	That shit had me laughing so hard! WTF? Never heard anything like that on any car let alone BMW. __________________ E92 335 \| Space Gray \| Saddle Brown Dakota \| Dark Burl Trim \| ZPP \| ZSP \| AT \| Idrive \| 6FL \| FBO \| Dinan CAI \| Quaife LSD \| STG3 PROCede.
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01-29-2011, 01:55 AM	#4
zmt Private First Class 8 Rep 184 Posts Drives: Model 3 RWD, van Join Date: Aug 2009 Location: DFW iTrader: (0)	I've heard the exact same noise on my car! No idea what it is, but I'd sure like to figure it out. Mine was much more periodic though, like 3 seconds of "mooooan" and then 5-6 off, rinse/repeat 3-4 times. I've only heard it twice and I can't pinpoint what I was doing or the state of the car when it happened other than it was at idle or crawling. Anyone have any ideas?
	Appreciate 0 Quote

01-29-2011, 02:34 AM	#5
Bakeme521 Some say... 239 Rep 4,296 Posts Drives: Fresh Join Date: Mar 2010 Location: Baton Rouge n NOLA iTrader: (12) Garage List 2007 BMW 335i [8.24]	hahahah I wish I knew and could help. It sounds like it ate some mexican and it is ripping a big one. __________________ I have exhaust and an intake...
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01-29-2011, 09:48 AM	#6
jake213 New Member 0 Rep 11 Posts Drives: e36 m3 seedan Join Date: Nov 2010 Location: madison iTrader: (0)	not to good with the e90s yet but is there a secondary air pump on that side? purge valve there? do the wastegates have something they do at idle for emissions? sounds like some sort of motor or valve pulsing.
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01-29-2011, 10:02 AM	#7
themyst Major General 177 Rep 6,631 Posts Drives: '16 MK7 GTI Join Date: Feb 2009 Location: NYC iTrader: (8)	Wastegate solenoid is taking a dump, you'll throw 30ff codes when it goes to shit. Dealer it. __________________ E90 LCI N54 6AT
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01-29-2011, 11:30 AM	#8
JoosyJoos Major 113 Rep 1,347 Posts Drives: 2011 335d Join Date: Apr 2007 Location: Atlanta, GA iTrader: (1) Garage List 2008 BMW 335i [0.00]	You've got a wookie in your engine... damn wookies. __________________ 1997 M3 Coupe - BMWCCA I-Prepared #22 2006 M Roadster - 23,000 miles and slowly counting
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01-29-2011, 01:15 PM	#9
GQ335i First Lieutenant 18 Rep 368 Posts Drives: BMW M5 (E60) Join Date: Apr 2010 Location: PA/NJ iTrader: (5)	Sounds like it's hungry for a Cheeseburger! Sorry man, first time I've heard that on a BMW. Put that warranty to good use!
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01-29-2011, 02:05 PM	#10
335i Colonel 184 Rep 2,320 Posts Drives: TOYOTA & 2008 E92 335i 6MT Join Date: Jul 2007 Location: Swiss iTrader: (4) Garage List 2008 335i [9.00]	try obd reader __________________ E92 335i Black Saphire 6MT PROcede V5, BMS DCI, Big Tom IC, AR CL-DP's 3", AR Design OC, Forge DV's, OEM M3 side skirts, BMW Performance Wheels 19 inch 269 Black Gloss+Continental ContiSportContact 5P (400hp and 550nm) https://www.youtube.com/user/aistis7..._as=subscriber
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01-29-2011, 05:52 PM	#11
scott135i Colonel 355 Rep 2,080 Posts Drives: 2020 X5 M50i Join Date: Feb 2009 Location: NYC Metro iTrader: (12)	My first guess was a wastegate/solenoid related issue, or some vacuum line... scanning for codes tomorrow, and appt for service on Friday. Will post back w/ the results of each
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01-29-2011, 06:49 PM	#12
MKE_M3 Lieutenant Colonel 65 Rep 1,705 Posts Drives: 2011 e90 M3 Join Date: Feb 2009 Location: Milwaukee, WI iTrader: (0)	before listening I was going to guess that it could be the water pump that cycles fluid through the turbo to cool it. That runs after the car is turned off if the engine temp is high enough. It could be that, but its tough to tell
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01-29-2011, 06:56 PM	#13
MusclezMarinara Banned 262 Rep 5,018 Posts Drives: VALNCYA Join Date: Jan 2009 Location: Jersey iTrader: (23) Garage List 2011 BMW 1M [9.22] 2009 335i Sedan xdrive [9.34]	Bring it in to the dealer thats why theres warranty
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01-30-2011, 11:12 AM	#14
WilliamE92 First Lieutenant 21 Rep 318 Posts Drives: 2013 EB F30 335 MT Join Date: Aug 2009 Location: CA iTrader: (1)	Do you have a tune installed?
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01-30-2011, 11:56 AM	#15
Slidewayz Major 33 Rep 1,177 Posts Drives: 2007 335i Join Date: Jan 2009 Location: Oakland, CA iTrader: (5)	your N54 has need. Needs. NEEDS, DAMMIT !!! If you don't satisfy your n54 it will look elsewhere...I'm just sayin'...
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01-30-2011, 12:22 PM	#16
vase330 Colonel 102 Rep 2,760 Posts Drives: 19 E63S; 15.5 RangeRover ATB Join Date: Jan 2007 Location: Arlington, Va iTrader: (1)	Bad table manners burping like that! __________________ E92 335 \| Space Gray \| Saddle Brown Dakota \| Dark Burl Trim \| ZPP \| ZSP \| AT \| Idrive \| 6FL \| FBO \| Dinan CAI \| Quaife LSD \| STG3 PROCede.
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09-12-2012, 12:49 AM	#17
stickz23 Modify the N54 17 Rep 366 Posts Drives: 335i Join Date: Jun 2011 Location: Downey, California iTrader: (15)	Anyone fix this sound. I noticed this sound for the first time tonight and researched up on it.
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09-12-2012, 07:51 AM	#18
JamesM3M5 Some dude 91 Rep 1,780 Posts Drives: E92 335i Join Date: Sep 2011 Location: Northern VA iTrader: (0)	Could it also be the PCV vent pipe at the back of the valve cover? There should be some sort of pressure/vacuum limiting system built into the PCV inside the valve cover, and it could be fluttering. Otherwise put your hand on each solenoid to see whether it's buzzing. Odd sound indeed. __________________ RRT E92 335i/6MT with stuff and things
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09-12-2012, 10:56 PM	#20
The Ghost Reborn 84 Rep 1,217 Posts Drives: 335i Join Date: Jun 2011 Location: USA iTrader: (1)	I've had two 335's and they both did that (it cycles on periodically, but not as frequent as yours). I assumed it was the water pump.
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09-12-2012, 11:02 PM	#21
e90328i Banned 25 Rep 386 Posts Drives: 07 E90 335i Join Date: May 2011 Location: socal iTrader: (4)	mine does this on cold starts for 20-30 seconds and its not that loud and goes away, pretty sure its a pump cycling does it do it all the time or just on cold starts?
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09-14-2012, 10:05 AM	#22
stickz23 Modify the N54 17 Rep 366 Posts Drives: 335i Join Date: Jun 2011 Location: Downey, California iTrader: (15)	I'm assuming all the time ( with the exceptions of the pause periods every few seconds) i'll be monitoring it heavily. I have noticed the sound when I'm up to temperature and at idle.
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