Go Back   AudiWorld Forums > Audi Models > Audi A4 > A4 (B6 Platform) Discussion
Sign in using an external account
Register Forgot Password?


A4 (B6 Platform) Discussion Discussion forum for the B6 Audi A4 produced from 2002-2005

Welcome to AudiWorld Forums!
Welcome to AudiWorld.com.

You are currently viewing our forums as a guest, which gives you limited access to view most discussions and access our other features. By joining our community you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is fast, simple and absolutely free so please, join the AudiWorld Forums community today!


Reply
 
 
 
 
LinkBack Thread Tools Search this Thread Display Modes
Old 02-23-2009, 07:47 AM   #1
Audiworld Junior Member
Account #: 28546
 
Join Date: Nov 2001
Posts: 45
Default Annoying "whine" noise in 2002 A4

About a year ago, my '02 A4 3.0Q developed an annoying whining noise that is noticeable when decelerating, like approaching a stop light or stop sign. The sound is not particularly loud, but can usually be heard over the radio and A/C blower. It changes pitch along with the speed of the car, and also happens when coasting to a stop in neutral. The car still drives well, except for some looseness/drifting in the steering (car does not track well over uneven or bumpy road surfaces).

I've had it to an independent shop and the dealer 4 times with no fix and am at my wit's end. The latest diagnosis from the dealer is that part of the transmission needs to be replaced, for the hefty cost of $5000. I can't believe this would be the case for a car with only 53,000 miles on it.

I think it is something to do with the servotronic steering or the pump, as one post suggested on here. The PS fluid looks to me to be brown, and has an unpleasant smell compared to new fluid.

Anyone have any experience with this problem?

Thanks
Bunky is offline   Reply With Quote
Old 02-23-2009, 07:57 AM   #2
AudiWorld Super User
Account #: 1107
 
JayP's Avatar
 
Join Date: Mar 2000
Posts: 2,552
Default Some things to check on the '02s...

53k miles is pretty low for a trans. I'd look other places before thinking of ways to scratch up $5k.

Your control arms are probably shot- from what you explain of the bumper roads. Probably a clunk or 2. But that's not where the whine is coming from.

Check the engine and trans mounts. If they are crapped, then you'll get more engine/trans noise. Since it's speed dependent, then look at the trans.

If all else fails and you need a trans, you can get one rebuilt or a used replacement. BTDT.
__________________

Koni/Eibach Prokit | 034 mounts | SB Clutch | B5 S4 Brakes | Ate Powerslots
Hawk Black | Zender 17"x8.5" LeMans | 255/40/17 Falken Azenis
JHM SS @ 25% | No A/C | No Stickers | Unpainted Lowers | Revo Stage 1
120k+ miles
Waiting on a track day and a battery recharge.
100 mile/day commute (In the Ranger, but getting 27mpg)
JayP is offline   Reply With Quote
Old 02-23-2009, 10:16 AM   #3
AudiWorld Super User
Account #: 44415
 
Join Date: Oct 2002
Posts: 2,668
Default Does the noise follow the accelerator, or only the car speed?

When anyone says "whining" I automatically think of the accessory belt tensioner.
__________________
B6 A4 3.0 AW Member Database

shwndh is offline   Reply With Quote
Old 02-23-2009, 11:18 AM   #4
Audiworld Junior Member
Account #: 28546
 
Join Date: Nov 2001
Posts: 45
Default Re: Does the noise follow the accelerator, or only the car speed?

I usually hear it when slowing to a stop -- foot off the accelerator and coasting/braking. Even when slowing from speeds of ~45 mph. It gets much more pronounced after the car is fully warmed up.

Sometimes can hear it faintly on the highway, too, but it is probably masked by road and wind noise. I don't usually hear it when accelerating, but then again, maybe the engine noise is just covering it up?
Bunky is offline   Reply With Quote
Old 02-23-2009, 11:48 AM   #5
Senior Member
Account #: 61481
 
Join Date: Aug 2003
Posts: 6,095
Default If it happens in neutral, it's probably not the transmission, since you are removing the load

from the engine.

Have you tried another set of wheels/tires if they are available to you? My old Kumhos got louder to the point of sounding like a helicopter.

I think the looseness of the steering is separate from any drivetrain whining, unless the whining changes when you go from lock to lock.
__________________
Bronze


2002 A4 1.8T M/T quattro
Brilliant Black/Ebony
APR Stage 1, snub, TIP, 710N DV
Neuspeed Short Shifter
Koni FSD/Eibach/H-sport S4 sways
B5 S4 front brakes, Porterfield R4S
Stoptech SS lines
Dunlop SP Sport 01/Yokohama AVID H4S
Bronze is offline   Reply With Quote
Old 02-23-2009, 01:39 PM   #6
Senior Member
Account #: 1391
 
A4Driver's Avatar
 
Join Date: Mar 2000
Posts: 2,123
Default Mine makes the same noise

The noise was really pronounced when I turned the steering wheel at low speeds. So I checked the power steering fluid and it was low, so I added some. It didn't fix the problem.

Well, one day last winter I had to bring the car to the dealership for an unrelated repair, and I mentioned the noise from what I thought was from the power-steering pump to the service tech. He said they would check it out. When I got the car back, the noise was gone. They never told me what the noise was from, and they didn't charge me for fixing anything related to it, so I just took my car and went home.

Now, this winter, my car is doing the same thing. When the car is cold it doesn't make any whining noise, but when it warms up (especially on cold days) the whining returns.

The noise seems to be related to my steering, because I can hear the noise most when I am turning the wheel.
.
.
.
__________________

Now:
2009
Premium Plus, 2.0T, Quattro, Tip, Sport, Deep Sea Blue Pearl
--------------------------------------------------------------------------------------
Then:
2002 3.0, Sport, Quattro, Manual, Denim Blue Pearl
1996 2.8 Quattro,
Manual, Emerald Mica
A4Driver is offline   Reply With Quote
Old 02-23-2009, 02:04 PM   #7
AudiWorld Super User
Account #: 75221
 
Join Date: May 2004
Posts: 3,645
Default did the check the center bearing on the driveshaft?

__________________

GIAC FX ~ AWE exhaust ~ APR TIP w/ samco boost hoses ~ K&N ~ Koni/neuspeed suspension ~ 18" fliks/BF Gdrch SS A/S ~ APR snub mount ~ B&M SS ~ podi ~ RS4 pedals ~ 3.0 front brakes ~ hawk pads all around ~ european xenon headlights ~ black out grill trims ~ painted front bumper w/ zender add-ons ~ S4 door blades and rear bumper ~ ebay spoiler ~ 40% tint

<a href="http://www.dvagonline.com/forums/showthread.php?t=507">the history of my car
</a>
heateris is offline   Reply With Quote
Old 02-23-2009, 05:19 PM   #8
Audiworld Junior Member
Account #: 28546
 
Join Date: Nov 2001
Posts: 45
Default Re-read your question; yes, it only follows the car speed

Bunky is offline   Reply With Quote
Old 04-01-2009, 07:08 AM   #9
New Member
Account #: 151944
 
Join Date: Aug 2008
Posts: 2
Default Bunky did you ever find the culprit? Same problem here..

The car will run great for 5-10 minutes into the commute then will start making the noise from the passenger front most noteably between 20-40mph (and above, but masked mostly by road noise) once it is warm. I think I have ruled out the wheel bearing since when I turn side to side quickly I don't hear any difference in the sound. The only recent work I have had done in the area, was had the control arms changed out about 1,000 miles ago and had the tires rotated a couple hundred miles ago. Any other ideas?

04 A4 Q 3.0 USP
73,000

Thanks
Brettoj59 is offline   Reply With Quote
Old 04-03-2009, 12:02 PM   #10
Audiworld Junior Member
Account #: 28546
 
Join Date: Nov 2001
Posts: 45
Default No...

I'm not sure what to do with it. Noise is still there, and dealer claims its the center differential which needs to be replaced.

Did you ever have a combination of new and used tires on the car? I was wondering if new tires in front and worn in back could have caused the problem somehow.

Also, anyone know if the fluid in the center diff is separate from the fluid in the automatic trans? I've never had the trans fluid changed in this car.
Bunky is offline   Reply With Quote
Old 04-03-2009, 12:02 PM
AudiWorld
Audi R8




Paid Advertisement
 
 
 
Reply

Tags
1900, 2003, 40, a4, audi, avid, gear, low, mph, noise, ranger, rpm, tiptronic, whine, whining, yokohama


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are On
Pingbacks are On
Refbacks are On



All times are GMT -8. The time now is 05:41 AM.


Copyright 2014 AudiWorld.com Audi Enthusiast Community