Home Forums Articles How To's FAQ Register
Go Back   Xoutpost.com > BMW SAV Forums > X5 (E53) Forum
Fluid Motor Union
User Name
Password
Member List Premier Membership Search Today's Posts Mark Forums Read

Xoutpost server transfer and maintenance is occurring....
Xoutpost is currently undergoing a planned server migration.... stay tuned for new developments.... sincerely, the management


Reply
 
LinkBack Thread Tools Display Modes
  #11  
Old 12-07-2020, 06:24 PM
crystalworks's Avatar
Member
 
Join Date: Jun 2014
Location: SA, TX
Posts: 6,414
crystalworks is on a distinguished road
That's good then. If all the sensors and offsets are reading correctly you have a hardware issue.

Have you checked the proportioning valve and lines at the big air tank under the truck for leaks? There is front/rear distribution on that solenoid and a gasket material between.

This tank and the solenoid (I have 2 because I was chasing my issue ):

__________________
2005 X5 4.4i Build 04/05 Maintenance/Build Log
Nav, Pano, Sport (Purchased 06/14 w/ 109,000 miles) (Sold 8/15 w/121,000 miles)


2006 X5 4.8is Build 11/05 Maintenance/Build Log
Nav, DSP, Pano, Running Boards, OEM Tow Hitch, Cold Weather Pckg (Purchased 08/15 w/ 90,500 miles)

2010 X5 35d Build 02/10
Nav, HiFi, 6 DVD, Sports Pckg, Cold Weather Pckg, HUD, CAS, Running Boards, Leather Dash, PDC, Pano (Purchased 03/17 w/ 136,120 miles)
Reply With Quote

Sponsored Links

  #12  
Old 12-07-2020, 08:26 PM
Member
 
Join Date: Jan 2011
Location: Huntington Beach California
Posts: 34
roadriderg is on a distinguished road
I did take the bottom panel off and soaped all fittings on the tank and proportioning valve no leaks. When i did the ista test it checked all functions of the valve, tank, compressor, sensors etc. They where working.

I am not sure if there is an exhaust valve on the pump itself. my next step is to get at the pump and verify that nothing is leaking in there. pump does get up to 15.5 bar so it is working properly. No water leaks in spare tire compartment.

It is so intermittent that is is hard to locate the problem. Maybe a sticking solenoid. This is why i am wondering if the proportioning valve is serviceable.
__________________
2006 e53 4.4i
Reply With Quote
  #13  
Old 12-07-2020, 09:19 PM
crystalworks's Avatar
Member
 
Join Date: Jun 2014
Location: SA, TX
Posts: 6,414
crystalworks is on a distinguished road
I disassembled one of mine. It is "serviceable." I don't your find individualparts (I couldn't when I tried), but it was easy enough to take apart and reassemble so a fix could probably be improvised.

I went through this same song and dance for a month or so.
__________________
2005 X5 4.4i Build 04/05 Maintenance/Build Log
Nav, Pano, Sport (Purchased 06/14 w/ 109,000 miles) (Sold 8/15 w/121,000 miles)


2006 X5 4.8is Build 11/05 Maintenance/Build Log
Nav, DSP, Pano, Running Boards, OEM Tow Hitch, Cold Weather Pckg (Purchased 08/15 w/ 90,500 miles)

2010 X5 35d Build 02/10
Nav, HiFi, 6 DVD, Sports Pckg, Cold Weather Pckg, HUD, CAS, Running Boards, Leather Dash, PDC, Pano (Purchased 03/17 w/ 136,120 miles)
Reply With Quote
  #14  
Old 12-08-2020, 11:36 AM
Member
 
Join Date: Jan 2011
Location: Huntington Beach California
Posts: 34
roadriderg is on a distinguished road
When you took you valve apart could you see any evidence of sticking or leaks?
__________________
2006 e53 4.4i
Reply With Quote
  #15  
Old 12-08-2020, 12:18 PM
crystalworks's Avatar
Member
 
Join Date: Jun 2014
Location: SA, TX
Posts: 6,414
crystalworks is on a distinguished road
I did not. And since I had the same results with both valves and tanks I moved on in my diagnosis and ruled out those components as the problem.

I do miss my air suspension's functionality, but I do not miss the headaches. At all.
__________________
2005 X5 4.4i Build 04/05 Maintenance/Build Log
Nav, Pano, Sport (Purchased 06/14 w/ 109,000 miles) (Sold 8/15 w/121,000 miles)


2006 X5 4.8is Build 11/05 Maintenance/Build Log
Nav, DSP, Pano, Running Boards, OEM Tow Hitch, Cold Weather Pckg (Purchased 08/15 w/ 90,500 miles)

2010 X5 35d Build 02/10
Nav, HiFi, 6 DVD, Sports Pckg, Cold Weather Pckg, HUD, CAS, Running Boards, Leather Dash, PDC, Pano (Purchased 03/17 w/ 136,120 miles)
Reply With Quote
  #16  
Old 12-08-2020, 03:45 PM
Member
 
Join Date: Jan 2011
Location: Huntington Beach California
Posts: 34
roadriderg is on a distinguished road
There are many other things to worry about on this car. I would like to drop the air suspension off my list.
__________________
2006 e53 4.4i

Last edited by roadriderg; 12-09-2020 at 02:08 PM.
Reply With Quote
  #17  
Old 01-22-2021, 05:43 PM
Member
 
Join Date: Jan 2011
Location: Huntington Beach California
Posts: 34
roadriderg is on a distinguished road
Suspension is fixed!! Seems that it was a leaking airbag after all. The reason it was intermittent was the height of the car would put the airbag roll in a position that it would leak. Slow leak just at the fold. When not in position it would hold air.
It was being particularly bad one day so I rechecked the bag with soap and water and found it.
I replaced both air struts and now the car is good. Odd thing is this is the second time the bags had been replaced . Once under warranty at 52000 miles and now at 82000 miles.

I am just ecstatic that it is fixed �� !
__________________
2006 e53 4.4i
Reply With Quote
Reply

Bookmarks

Thread Tools
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 Off
Trackbacks are On
Pingbacks are On
Refbacks are On





All times are GMT -4. The time now is 03:30 AM.
vBulletin, Copyright 2024, Jelsoft Enterprises Ltd. SEO by vBSEO 3.6.0
© 2017 Xoutpost.com. All rights reserved. Xoutpost.com is a private enthusiast site not associated with BMW AG.
The BMW name, marks, M stripe logo, and Roundel logo as well as X3, X5 and X6 designations used in the pages of this Web Site are the property of BMW AG.
This web site is not sponsored or affiliated in any way with BMW AG or any of its subsidiaries.