suspension pump question... - AudiWorld Forums

Notices
A8 / S8 (D3 Platform) Discussion Discussion forum for the D3 Audi A8 produced from 2003-2010 and Audi S8 produced from 2006-2010

suspension pump question...

Reply

 
 
Old 05-14-2014, 08:44 AM
  #1
AudiWorld Senior Member
Thread Starter
 
Join Date: Jul 2001
Location: Kansas City
Posts: 1,375
Default suspension pump question...

does the air pump ever fail for reasons other than a leak ? And when I say fail I mean that the pump will still run but wont keep the car at height and yellow light comes on. And the year in question is an 06 with sport suspension.
awdinut is offline  
Reply With Quote
Old 05-14-2014, 08:52 AM
  #2
AudiWorld Member
 
03_AR_CO's Avatar
 
Join Date: Jul 2006
Location: Colorado
Posts: 477
Default

If the pump is running and cannot keep the car height consistent, there is a leak somewhere in the system and eventually the pump will fail all together from over working it.
03_AR_CO is offline  
Reply With Quote
Old 05-14-2014, 10:02 AM
  #3
AudiWorld Super User
 
mishar's Avatar
 
Join Date: Nov 2010
Location: Vancouver, Canada
Posts: 6,834
Default

System pressure is ~16 bar. If pump can't deliver that pressure it will run until it overheats.
mishar is offline  
Reply With Quote
Old 05-14-2014, 11:01 AM
  #4
AudiWorld Senior Member
Thread Starter
 
Join Date: Jul 2001
Location: Kansas City
Posts: 1,375
Default thats the common scenario...

Originally Posted by 03_AR_CO View Post
If the pump is running and cannot keep the car height consistent, there is a leak somewhere in the system and eventually the pump will fail all together from over working it.
but I want to know if there are ever just pumps that fail with out a leak as the cause.
awdinut is offline  
Reply With Quote
Old 05-14-2014, 11:14 AM
  #5
AudiWorld Member
 
03_AR_CO's Avatar
 
Join Date: Jul 2006
Location: Colorado
Posts: 477
Default

Sure they can wear out, if you are driving an '04 the pump is 10 years old and should be expected to become weak and wear out over time, and as you suggest no other suspension leaks needed for it to become worn.
03_AR_CO is offline  
Reply With Quote
Old 05-14-2014, 11:18 AM
  #6
AudiWorld Senior Member
 
aTOMic's Avatar
 
Join Date: Feb 2012
Location: Moronville, Tennessee (Middle TN)
Posts: 1,631
Default

The piston ring can (does) wear out, then the pump overheats from running constantly. Also there's a reed valve that could fail.
aTOMic is offline  
Reply With Quote
Old 05-14-2014, 11:21 AM
  #7
AudiWorld Senior Member
 
aTOMic's Avatar
 
Join Date: Feb 2012
Location: Moronville, Tennessee (Middle TN)
Posts: 1,631
Default

You can get a kit from a guy in the UK named "BagpipingAndy" he's on a8parts.com. Last I checked it was about $40 shipped, I understand it takes a week or so to the US.
aTOMic is offline  
Reply With Quote
Old 05-14-2014, 04:20 PM
  #8
tjf
AudiWorld Member
 
Join Date: Oct 2000
Posts: 390
Default

Mine failed a year ago. I replaced it with a $500 one from Germany (e-bay). I have never found a leak. Car never sags, even if sitting for 2 weeks. No leaks from valve block either.
tjf is offline  
Reply With Quote
Old 05-14-2014, 05:01 PM
  #9
AudiWorld Super User
 
Mister Bally's Avatar
 
Join Date: Jan 2006
Location: Detroit, Michigan USA
Posts: 5,085
Default

#1 failure of the WABCO ECAS pump is one of the magnets breaks free from the motor housing causin slow motof speed and drag. Overheat condition soon follows. You can disassemble and reglue (use JB Weld) the magnet and then add glue to the magnet that is still in place.
2nd common failure mode is a worn puston ring as this is an oil free compressor.
Mister Bally is offline  
Reply With Quote
Old 05-14-2014, 11:55 PM
  #10
Audiworld Junior Member
 
Join Date: Apr 2014
Location: Dubai, UAE
Posts: 31
Default

Originally Posted by mishar View Post
System pressure is ~16 bar. If pump can't deliver that pressure it will run until it overheats.
I didn't realise it was that much. You'd think if you had a leak if you parked somewhere without much background noise you'd hear it hissing out.
James Rothwell is offline  
Reply With Quote
 
 
 

Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
balabee
TT (Mk1) Discussion
8
12-26-2015 08:23 AM
Bruce B
Q5/SQ5 MKI (8R) Discussion
5
09-25-2015 12:11 AM
mxp
Audi allroad
6
09-24-2015 09:51 PM
smallbizwhiz
S4 (B8 Platform) Discussion
7
09-24-2015 11:31 AM
Georgi_Kirov
Vehicles For Sale
0
09-15-2015 11:11 PM

Thread Tools
Search this Thread
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 Off
Pingbacks are Off
Refbacks are Off



All times are GMT -8. The time now is 12:28 AM.


 
  • Ask a Question
    Get answers from community experts
Question Title:
Description:
Your question will be posted in: