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Message |
KJ
Guest
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 Posted:
Mon Nov 14, 2005 9:28 pm Post subject:
1999 E34 2.5L I-6 (323i) ~3,000rpm engine whine - normal? |
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As the subject says, I have a '99 323i that makes a distinctive whine at
approximately 3,000 rpm (changes with load) sounding like a
whistle/whine coming from around the intake area of the engine.
As this car is new to me, the previous owner said it's normal and the
local dealer also said this is not uncommon.
What is the group's opinion on this audible nuance?
Any tips on reducing or eliminating this distraction would be helpful.
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Jeremy
Guest
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| Posted:
Mon Nov 14, 2005 9:34 pm Post subject:
Re: 1999 E34 2.5L I-6 (323i) ~3,000rpm engine whine - normal |
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In article <_22ef.2026$bx3.1299@tornado.tampabay.rr.com>, KJ says...
| Quote: | As the subject says, I have a '99 323i
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Don't wish to be pedantic but that's not an E34.
--
jeremy
[this space left intentinally blank] |
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bfd
Guest
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| Posted:
Mon Nov 14, 2005 11:59 pm Post subject:
Re: 1999 E34 2.5L I-6 (323i) ~3,000rpm engine whine - normal |
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Agree, but you have have told him that a 1999 3 series is an E46! Good
car. If you hear a whistling or whining from teh intake area, you
should first look for a vacuum leak.
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Jeremy
Guest
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| Posted:
Tue Nov 15, 2005 12:07 am Post subject:
Re: 1999 E34 2.5L I-6 (323i) ~3,000rpm engine whine - normal |
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In article <1131991183.419877.119460@g43g2000cwa.googlegroups.com>, bfd
says...
| Quote: | Agree, but you have have told him that a 1999 3 series is an E46!
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Would have done if I had known... I have spent the last year as a
Mercedes owner and consequently have lost touch with all the BMW E
numbers.
Now it's all W210 this, W211 that...
--
jeremy |
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KJ
Guest
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| Posted:
Tue Nov 15, 2005 12:35 am Post subject:
Re: 1999 E34 2.5L I-6 (323i) ~3,000rpm engine whine - normal |
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bfd wrote:
| Quote: | Agree, but you have have told him that a 1999 3 series is an E46! Good
car. If you hear a whistling or whining from teh intake area, you
should first look for a vacuum leak.
|
Okay, sorry I was working from <a failed> memory on the "E" number.
However, I am familiar with vacuum leaks and this does not sound like
any I've ever heard before. Rather than try to describe exactly the
noise, if anyone can just confirm what I believe in that the BMW
engineers would never design a car and allow a loud whistle-like noise
at appprox. 3,000 rpm - not noticed at any other rpm range or with
transmission (manual) disengaged.
I've had two independent people say it's "not abnormal" but I would
think they are full of it. Are they?
Thanks. |
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Raybender
Guest
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| Posted:
Tue Nov 15, 2005 2:11 am Post subject:
Re: 1999 E34 2.5L I-6 (323i) ~3,000rpm engine whine - normal |
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KJ wrote:
| Quote: | bfd wrote:
Agree, but you have have told him that a 1999 3 series is an E46! Good
car. If you hear a whistling or whining from teh intake area, you
should first look for a vacuum leak.
Okay, sorry I was working from <a failed> memory on the "E" number.
However, I am familiar with vacuum leaks and this does not sound like
any I've ever heard before. Rather than try to describe exactly the
noise, if anyone can just confirm what I believe in that the BMW
engineers would never design a car and allow a loud whistle-like noise
at appprox. 3,000 rpm - not noticed at any other rpm range or with
transmission (manual) disengaged.
I've had two independent people say it's "not abnormal" but I would
think they are full of it. Are they?
Thanks.
|
While I have an E36 (1997) I would assume this noise is NOT normal on your
car either. Does it have an after-market air cleaner on it? If not, then
look for a vacuum leak, or perhaps one of the idler pulleys for the fan
belts is bad. Though by saying you don't hear the noise when reving in
neutral, it appears that engine needs to be under load (torqued over, and
really sucking wind) to produce the noise - really suggests a vacuum leak on
the intake. Would think it would throw a code though and 'possibly' set
your check engine light. Maybe a crack somewhere ahead of the MAF sensor?
This would not throw a code.
Good luck
Frank |
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KJ
Guest
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| Posted:
Tue Nov 15, 2005 3:26 am Post subject:
Re: 1999 E34 2.5L I-6 (323i) ~3,000rpm engine whine - normal |
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Raybender wrote:
| Quote: | KJ wrote:
bfd wrote:
Agree, but you have have told him that a 1999 3 series is an E46! Good
car. If you hear a whistling or whining from teh intake area, you
should first look for a vacuum leak.
Okay, sorry I was working from <a failed> memory on the "E" number.
However, I am familiar with vacuum leaks and this does not sound like
any I've ever heard before. Rather than try to describe exactly the
noise, if anyone can just confirm what I believe in that the BMW
engineers would never design a car and allow a loud whistle-like noise
at appprox. 3,000 rpm - not noticed at any other rpm range or with
transmission (manual) disengaged.
I've had two independent people say it's "not abnormal" but I would
think they are full of it. Are they?
Thanks.
While I have an E36 (1997) I would assume this noise is NOT normal on your
car either. Does it have an after-market air cleaner on it? If not, then
look for a vacuum leak, or perhaps one of the idler pulleys for the fan
belts is bad. Though by saying you don't hear the noise when reving in
neutral, it appears that engine needs to be under load (torqued over, and
really sucking wind) to produce the noise - really suggests a vacuum leak on
the intake. Would think it would throw a code though and 'possibly' set
your check engine light. Maybe a crack somewhere ahead of the MAF sensor?
This would not throw a code.
Good luck
Frank
Thanks for the suggestions. It's good to have another opinion like mine |
that this shouldn't be normal. I have no engine error codes, perhaps,
oddly enough.
Stock intake and OEM air filter...very few aftermarket parts on the car.
I'll look for some cracks or maybe do some smoke, soapy water, or garden
hose tests later now that I know my sanity is fine.
Thanks all. |
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BMW guy
Guest
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| Posted:
Sun Nov 20, 2005 3:15 pm Post subject:
Re: 1999 E34 2.5L I-6 (323i) ~3,000rpm engine whine - normal |
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In article <_22ef.2026$bx3.1299@tornado.tampabay.rr.com>, KJ says...
| Quote: |
As the subject says, I have a '99 323i that makes a distinctive whine at
approximately 3,000 rpm (changes with load) sounding like a
whistle/whine coming from around the intake area of the engine.
As this car is new to me, the previous owner said it's normal and the
local dealer also said this is not uncommon.
What is the group's opinion on this audible nuance?
Any tips on reducing or eliminating this distraction would be helpful.
|
I have a 97 M3 that had a periodic whistling/whining noise that drove me crazy.
It was not RPM specific as you state, but it turned out to be the idler pully
that is mounted to the alternator.
Hope that helps |
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