'99 9-5 auto roaring noise on acceleration

leigh wrote:

> Hi everyone, my automatic 1999 9-5 2.3 lpt makes a roaring sound b/w 30
> and 40 mph. it didn't make that sound before. the noise doesn't seem
> to be coming from any side of the car in particular, and the muffler
> was replaced a few months ago. it really sounds more like a "wooooo"
> than a whine or a grind, and it's pretty loud - my passengers tend to
> (annoyingly) point it out. any ideas on what this sound could be? i
> can live with it but i don't want it to turn into something much worse
> if left unattended. thanks in advance for any help you guys can offer.

A light whistly noise ? Almost musical ?

Might be the turbo.

Graham
 >> Stay informed about: '99 9-5 auto roaring noise on acceleration 

thanks for the suggestions, i'll definitely take a look.

On Jan 4, 12:35 pm, "Richard" <root@localhost> wrote:
> "leigh" <duff.mcni....RemoveThis@gmail.com> schreef in berichtnews:1167879180.997723.103600@6g2000cwy.googlegroups.com...
>
> > actually, deeper, like a gutteral mooing or a zombie's groan (sigh).
> > these are the best ways to describe it.
>
> > forgot to add that i had the wheel bearings checked to no avail.
>
> > Eeyore wrote:
> >> leigh wrote:
>
> >> > Hi everyone, my automatic 1999 9-5 2.3 lpt makes a roaring sound b/w 30
> >> > and 40 mph. it didn't make that sound before. the noise doesn't seem
> >> > to be coming from any side of the car in particular, and the muffler
> >> > was replaced a few months ago. it really sounds more like a "wooooo"Did this sounds start around the same time the muffler was changed?
> Then that would be the first thing to consider, and check.
> Maybe the muffler touches a body part somewhere and resonates at a certain
> speed?
>
> I remember one of my old cars... they replaced the exhaust pipe, and all was
> well, UNTIL you started driving and accelerating.
> Then the movement of the engine made the pipe just touch the chassis, and
> the sound was what you describe.
> Its not locatable, because the whole chassis is vibrating making the sound
> come from "everywhere"
>
> Good luck!
>
> Richard.
 >> Stay informed about: '99 9-5 auto roaring noise on acceleration 

"leigh" <duff.mcninja.TakeThisOut@gmail.com> schreef in bericht
news:1167879180.997723.103600@6g2000cwy.googlegroups.com...
> actually, deeper, like a gutteral mooing or a zombie's groan (sigh).
> these are the best ways to describe it.
>
> forgot to add that i had the wheel bearings checked to no avail.
>
> Eeyore wrote:
>> leigh wrote:
>>
>> > Hi everyone, my automatic 1999 9-5 2.3 lpt makes a roaring sound b/w 30
>> > and 40 mph. it didn't make that sound before. the noise doesn't seem
>> > to be coming from any side of the car in particular, and the muffler
>> > was replaced a few months ago. it really sounds more like a "wooooo"

Did this sounds start around the same time the muffler was changed?
Then that would be the first thing to consider, and check.
Maybe the muffler touches a body part somewhere and resonates at a certain
speed?

I remember one of my old cars... they replaced the exhaust pipe, and all was
well, UNTIL you started driving and accelerating.
Then the movement of the engine made the pipe just touch the chassis, and
the sound was what you describe.
Its not locatable, because the whole chassis is vibrating making the sound
come from "everywhere"

Good luck!

Richard.
 >> Stay informed about: '99 9-5 auto roaring noise on acceleration 

On 3 Jan 2007 16:27:22 -0800, "leigh" <duff.mcninja DeleteThis @gmail.com> wrote :

>Hi everyone, my automatic 1999 9-5 2.3 lpt makes a roaring sound b/w 30
>and 40 mph. it didn't make that sound before. the noise doesn't seem
>to be coming from any side of the car in particular, and the muffler
>was replaced a few months ago. it really sounds more like a "wooooo"
>than a whine or a grind, and it's pretty loud - my passengers tend to
>(annoyingly) point it out. any ideas on what this sound could be? i
>can live with it but i don't want it to turn into something much worse
>if left unattended. thanks in advance for any help you guys can offer.


I had a similar problem, took ages to pinpoint it.
It was two of the tyres that had developed ridges and out-of-round
condition. Replaced the tyres, lost the noise.
--
Regards,
Peter Wilkins
 >> Stay informed about: '99 9-5 auto roaring noise on acceleration 

On 2007-01-03 21:53:02 -0500, "leigh" <duff.mcninja.TakeThisOut@gmail.com> said:

> actually, deeper, like a gutteral mooing or a zombie's groan (sigh).
> these are the best ways to describe it.
>
> forgot to add that i had the wheel bearings checked to no avail.
>
> Eeyore wrote:
>> leigh wrote:
>>
>>> Hi everyone, my automatic 1999 9-5 2.3 lpt makes a roaring sound b/w 30
>>> and 40 mph. it didn't make that sound before. the noise doesn't seem
>>> to be coming from any side of the car in particular, and the muffler
>>> was replaced a few months ago. it really sounds more like a "wooooo"
>>> than a whine or a grind, and it's pretty loud - my passengers tend to
>>> (annoyingly) point it out. any ideas on what this sound could be? i
>>> can live with it but i don't want it to turn into something much worse
>>> if left unattended. thanks in advance for any help you guys can offer.
>>
>> A light whistly noise ? Almost musical ?
>>
>> Might be the turbo.
>>
>> Graham

I had something similar on my 99 9-5, couldn't quite describe it but it
was (1) about that speed and (2) only under acceleration. Almost
sounded like tire noise on a really aggressive tread.

About 6 months later I started to hear the tell-tale signs of a wheel
bearing going, got that replaced and the grinding/sound went away.

Bet that's it, mine was the left front
 >> Stay informed about: '99 9-5 auto roaring noise on acceleration