suspension pump question... - AudiWorld Forums

Go Back   AudiWorld Forums > Audi Models > Audi A8 / S8 > A8 / S8 (D3 Platform) Discussion
Log In 


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
 
 
 
LinkBack Thread Tools Search this Thread
Old 05-14-2014, 08:44 AM   #1
AudiWorld Senior Member
 
Join Date: Jul 2001
Location: Kansas City
Posts: 1,231
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.
__________________
2004 A8 L 4.2 Platinum Beige w/ Amaretto
Maple Copper GmbH Exclusive wood trim
Alcantara Headliner/Extended Leather
Rear Climate Control & Lumbar
Ventilated & Massage Seats
MFSW Shift Paddle upgrade
W12 Rear bumper upgrade
Dual Tray Tables
Illuminated sills
DVD Headrests
Security Glass
Refrigerator
AMI
XM
BT
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: 392
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.
__________________
Current:

2006 A8L W12 Black/Black
2004 A8L Atlas Gray Metalic
2001 TT Coupe 225 Silver


From the past:

2003 allroad Burgundy
1997 A6Q Avant Black
1996 A6Q Avant Pearl White
1991 200CS Q Gold
1987 5000S Gold
1986 4000S Black
1984 5000CS Q Avant Blue
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: 6,457
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
 
Join Date: Jul 2001
Location: Kansas City
Posts: 1,231
Default thats the common scenario...

Quote:
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.
__________________
2004 A8 L 4.2 Platinum Beige w/ Amaretto
Maple Copper GmbH Exclusive wood trim
Alcantara Headliner/Extended Leather
Rear Climate Control & Lumbar
Ventilated & Massage Seats
MFSW Shift Paddle upgrade
W12 Rear bumper upgrade
Dual Tray Tables
Illuminated sills
DVD Headrests
Security Glass
Refrigerator
AMI
XM
BT
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: 392
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.
__________________
Current:

2006 A8L W12 Black/Black
2004 A8L Atlas Gray Metalic
2001 TT Coupe 225 Silver


From the past:

2003 allroad Burgundy
1997 A6Q Avant Black
1996 A6Q Avant Pearl White
1991 200CS Q Gold
1987 5000S Gold
1986 4000S Black
1984 5000CS Q Avant Blue
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, TN (middle TN)
Posts: 1,251
Default

The piston ring can (does) wear out, then the pump overheats from running constantly. Also there's a reed valve that could fail.
__________________
I'm in love with my car!
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, TN (middle TN)
Posts: 1,251
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.
__________________
I'm in love with my car!
aTOMic is offline   Reply With Quote
Old 05-14-2014, 04:20 PM   #8
tjf
AudiWorld Member
 
Join Date: Oct 2000
Posts: 357
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.
__________________
tom
11 A4 Avant
05 A8L
99.0 A4 2.8
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: 4,528
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

Quote:
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
 
 
Reply

Similar Threads
Thread Thread Starter Forum Replies Last Post
Rear suspension not right after jacking! balabee TT (Mk1) Discussion 8 12-26-2015 08:23 AM
'16 SQ5, first week report! 800 miles... Bruce B Q5/SQ5 Discussion 5 09-25-2015 12:11 AM
Air suspension on 2001 vs 2005 models mxp Audi allroad 6 09-24-2015 09:51 PM
2013+ S4 Reliability smallbizwhiz S4 (B8 Platform) Discussion 7 09-24-2015 11:31 AM
Audi Other Audi RS2 (recreation) for sale Georgi_Kirov Vehicles For Sale 0 09-15-2015 11:11 PM


Thread Tools Search this Thread
Search this Thread:

Advanced Search

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



All times are GMT -8. The time now is 06:05 PM.