Problem: e90 325i engine noise

qwerty · 10-24-2005, 09:54 AM

I have e90 325i with 1000 miles on it. I recently discovered a strange noise coming from under the hood. :mad: It is july production. My wife drives the car 90% of the time and we strictly follow the break-in period recommendations. It's my first problem.

The noise is not loud and sounds like wweeeeeee~. The engine only makes the noise at greater than 1K RPM with transmission at D or P. It is barely noticeable from inside during driving with all the windows closed. I noticed it when my wife drove by me once. I doesn't seem to happen all the time too. With the gear in P, of several tries of high RPM idle, may be the engine makes the noise ~50% of time.

Does anyone have experiented the same problem?
Does anyone know what the source of the problem is?
I hope it is an uncommon problem, but you should check it since I couldn't hear it from inside the car.

qwerty

lumberman · 10-24-2005, 11:13 AM

have the dealer check out, I dont' have as much miles as yours, but engine from the outside should be very quiet, because I've done it few times, I have CA and sometime I forgot to stop the engine, from the outside you can't hear a thing, or at least the noise level was not noticeable, there was once I left the engine run from more than hours!!

E90Fleet · 10-24-2005, 02:02 PM

You shure its not just the auxilary fan comming on to help cool the enigne ?

Also I would rev the engine too high in P, its very bad for it

qwerty · 10-24-2005, 02:19 PM

I don't think it is the fan. By the way, the noise is like whine.

E90Fleet · 10-24-2005, 02:26 PM

Have you listened to another automatic BMW before ?

Just making shure you are not worring about the normal whiny sound a automatic BMW makes.

You could ask you service manager to just quickly listen to it and see what he says.

Xens · 10-24-2005, 02:59 PM

I never thought BMW would be that quiet to begin with, that's what Lexus is good at, I'm not saying your noise is 100% normal, but I'd say 90%. Being that I have a manual, it's a lot more noisier than a step, I have a whole bunch of weeees and waaas when I'm accelerating/de-accelerating, from the engine and drivetrain. Just something to think about.

qwerty · 10-24-2005, 04:31 PM

For the compasion, I listened to e46 passing by. It is very quite relative to my car.

Xens · 10-24-2005, 06:32 PM

Quote:

Originally Posted by qwerty

For the compasion, I listened to e46 passing by. It is very quite relative to my car.

Get it checked out. And other cars passing by WILL sound quieter, have someone drive your car and listen to it.

qwerty · 06-05-2006, 12:43 PM

I recorded the engine whining noise and attached it here.

Basically, as I was driving the car from stop to 20MPh, I held the recorder outside and recorded the whining noise. You'll hear the whining noise followed by a wind noise as I approach 20MPh. The engine was cold during the recording. Hope this is useful for others.

I have appointment with a dealer in few days. I'll update you guys on this as well as other problems that I experienced.

kobechrome · 06-05-2006, 12:46 PM

Quote:

Originally Posted by qwerty

I have e90 325i with 1000 miles on it. I recently discovered a strange noise coming from under the hood. :mad: It is july production. My wife drives the car 90% of the time and we strictly follow the break-in period recommendations. It's my first problem.
qwerty

What's more interesting is that you've had the car for 10-11 months and you only have 1000 miles on it?

qwerty · 06-05-2006, 12:53 PM

Quote:

Originally Posted by kobechrome

What's more interesting is that you've had the car for 10-11 months and you only have 1000 miles on it?

Sorry. My original was posted several months back and I recently was able to record it. Now I have 6K miles on it.

David328M-Sport · 06-05-2006, 03:54 PM

my car has a slight whining noise, noticeable in ds mode and at moderate revs.

i understand this to be the standard auto tranny noise. it is not what your car is making as mine sounds more like a turbine noise and doesnt sound too bad at all.

i cannot hear it in d mode.

all the best having it fixed.

maximal · 09-20-2011, 02:38 PM

Is it something like this noise between 500rpm-1500rpm?

bsamoul · 09-20-2011, 03:50 PM

Quote:

Originally Posted by maximal

Is it something like this noise between 500rpm-1500rpm?

dude, 5 years ago. OP hasn't logged in in 3 years.

10-24-2005, 09:54 AM	#1
qwerty Private 13 Rep 50 Posts Drives: 325i Join Date: Oct 2005 Location: ny iTrader: (0)	Problem: e90 325i engine noise I have e90 325i with 1000 miles on it. I recently discovered a strange noise coming from under the hood. :mad: It is july production. My wife drives the car 90% of the time and we strictly follow the break-in period recommendations. It's my first problem. The noise is not loud and sounds like wweeeeeee~. The engine only makes the noise at greater than 1K RPM with transmission at D or P. It is barely noticeable from inside during driving with all the windows closed. I noticed it when my wife drove by me once. I doesn't seem to happen all the time too. With the gear in P, of several tries of high RPM idle, may be the engine makes the noise ~50% of time. Does anyone have experiented the same problem? Does anyone know what the source of the problem is? I hope it is an uncommon problem, but you should check it since I couldn't hear it from inside the car. qwerty
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10-24-2005, 11:13 AM	#2
lumberman Private First Class 15 Rep 195 Posts Drives: BMW F10 M5 Join Date: Mar 2005 Location: Macau iTrader: (0)	have the dealer check out, I dont' have as much miles as yours, but engine from the outside should be very quiet, because I've done it few times, I have CA and sometime I forgot to stop the engine, from the outside you can't hear a thing, or at least the noise level was not noticeable, there was once I left the engine run from more than hours!!
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10-24-2005, 02:02 PM	#3
E90Fleet Lieutenant General 1312 Rep 10,185 Posts Drives: BMW Join Date: Apr 2005 Location: South Africa iTrader: (0)	You shure its not just the auxilary fan comming on to help cool the enigne ? Also I would rev the engine too high in P, its very bad for it
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10-24-2005, 02:19 PM	#4
qwerty Private 13 Rep 50 Posts Drives: 325i Join Date: Oct 2005 Location: ny iTrader: (0)	I don't think it is the fan. By the way, the noise is like whine.
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10-24-2005, 02:26 PM	#5
E90Fleet Lieutenant General 1312 Rep 10,185 Posts Drives: BMW Join Date: Apr 2005 Location: South Africa iTrader: (0)	Have you listened to another automatic BMW before ? Just making shure you are not worring about the normal whiny sound a automatic BMW makes. You could ask you service manager to just quickly listen to it and see what he says.
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10-24-2005, 02:59 PM	#6
Xens Eh 108 Rep 653 Posts Drives: Is Turbo'd Join Date: Sep 2005 Location: Bay Area, CA iTrader: (0) Garage List 2006 330i [0.00]	I never thought BMW would be that quiet to begin with, that's what Lexus is good at, I'm not saying your noise is 100% normal, but I'd say 90%. Being that I have a manual, it's a lot more noisier than a step, I have a whole bunch of weeees and waaas when I'm accelerating/de-accelerating, from the engine and drivetrain. Just something to think about.
	Appreciate 0 Quote

10-24-2005, 04:31 PM	#7
qwerty Private 13 Rep 50 Posts Drives: 325i Join Date: Oct 2005 Location: ny iTrader: (0)	For the compasion, I listened to e46 passing by. It is very quite relative to my car.
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06-05-2006, 03:54 PM	#12
David328M-Sport Brigadier General 101 Rep 3,566 Posts Drives: F30 M-Sport 328i Estoril Blue Join Date: Jun 2005 Location: Melbourne Australia iTrader: (0)	my car has a slight whining noise, noticeable in ds mode and at moderate revs. i understand this to be the standard auto tranny noise. it is not what your car is making as mine sounds more like a turbine noise and doesnt sound too bad at all. i cannot hear it in d mode. all the best having it fixed. __________________ 328i M-Sport, Estoril Blue, Carbon XP 35 Tint, front heated seats, black Dakota, Sports Suspension, Anthracite Headliner, HUD, Pro Nav, Sunroof, hk 600w, Bi-Xenon, 19" 403M wheels, Reversing Camera, DAB+, Xenon, BT Ext Connect, MST turbo intake pipe, MST Cold Air Intake, JB4 on Map 2 with Catless DP produces awesome performance in Sport.
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09-20-2011, 02:38 PM	#13
maximal Private First Class 23 Rep 155 Posts Drives: E70,E83,E87,E90,E93 Join Date: Mar 2006 Location: europe, BG iTrader: (0)	Is it something like this noise between 500rpm-1500rpm?
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