Power Steering Problem - whining noise - Audi Forums
B6 Forum 2002-2005 Audi A4 & Audi A4 Cabriolet / 2004 Audi S4. (Audi A4 Forum, Audi S4 Forum, Audi RS4 Forum)

User Tag List

 
LinkBack Thread Tools Display Modes
post #1 of 2 (permalink) Old 01-09-2010, 07:52 PM Thread Starter
Newbie
 
Join Date: Apr 2008
Posts: 2
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
 
Power Steering Problem - whining noise

I have a 2002 Audi A4, 3.0 quattro and recently with the change in weather getting colder and colder, my steering wheel became somewhat "frozen". It's hard to move my steering wheel and every time I do so, there's this loud whining noise. I checked the power steering fluid level and it was low, so I bought the Pentosin 11S and topped it off. Initially the problem was somewhat solved (less resistance when turning the wheel) but after a few days the problem came back with the noise.

I noticed that after driving the car for a while and letting the engine warm up more, the whining noise became less severe and the resistance when turning the steering wheel also became less although there's still a little whining noise. Anyone know what the problem may be?
kean is offline  
Sponsored Links
Advertisement
 
post #2 of 2 (permalink) Old 01-10-2010, 08:40 AM
Senior
 
mullardel34's Avatar
 
Join Date: Nov 2008
Location: Midwest US
Posts: 368
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
 
The cold weather can bring any weaknesses in the condition of your Audi power-steering system to the forefront; this is especially true for the 3.0L vehicles. The power-steering noise is usually described as a "groaning" sound. There's a progression of potential problems that need to be addressed, beginning with a healthy power-steering system that's just a bit low on power-steering fluid, ending with a leaky power-steering rack with failing seals and/or an abused/failing power-steering pump). Be aware that the Audi dealerships often take the stance that you must blindly replace the power-steering rack and the associated power-steering pump. Diagnosis of the underlying causes is key to determining where to begin.

If your power-steering system is fundamental healthy (no leaks or failed components), the issue is often just a case of slightly insufficient power-steering fluid, allowing air to be sucked into and circulated within the power-steering system, producing the "groaning" noise. For many of us, the information in the following link can quickly resolve the "groaning" problem (<$20 for materials):

DIY: B6 A4 3.0 - Power Steering Noise Fix - Audizine Forums

The next step in working to resolve a power-steering "groan" is to flush and replace the power-steering fluid. The Audi power-steering system is very specifically tailored to use ONLY Audi-spec mineral-based synthetic power-steering fluid (the "green stuff" as it's referred to in the vernacular). Running any non-approved power-steering fluid (or any sort of mix of power-steering fluids) can result in the rapid decline and failure of the Audi power-steering system. The Pentosin CHF 11S is readily available from a number of forum sponsors (you can also find it at most NAPA auto-parts stores --- it's used as hydraulic fluid by a number high-end industrial equipment manufacturers). Cost is <$50 in materials, labor costs will vary.

If a flush-and-replace of the power-steering fluid doesn't quiet things down, the usual next step is to replace the power-steering pump. This service step assumes that there are no obvious leaks from any portion of the power-steering system and no on-going loss of power-steering fluid. Again, the dealership service-writers will try to convince you that you must replace the power-steering pump and steering rack as a monolithic unit (their usual rationale for this approach is that either portion of the power-steering system will "contaminate" the other). The power-steering noise that was plaguing my wife's 2002 A4 3.0L Quattro (~100K-miles on the odometer) was eliminated at this step --- no subsequent "contamination/cooties" between the power-steering pump and the rack has prompted any steering system failure. Cost is ~$330 in parts, labor costs will vary.

The final step in eliminating any power-steering system noises is to replace the power-steering rack. Cost is ~$700 for the rack, labor costs will vary.

---Mullard EL34
* 2003 A4 3.0L Quattro (6-speed manual)
* sport package
* 18"x8" Moda MD5
* Continental ExtremeContact DWS (235/40ZR18)
mullardel34 is offline  
Sponsored Links
Advertisement
 
Reply

  Audi Forums > Audi Models > Audi A4, RS4 and S4 Forum > B6 Forum

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Audi Forums forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in









Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



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 Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome