Home Forums Articles How To's FAQ Register
Go Back   Xoutpost.com > BMW SAV Forums > X5 (E53) Forum
Arnott
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
  #31  
Old 07-02-2012, 02:27 PM
hunds02's Avatar
Member
 
Join Date: Mar 2007
Location: Cleveland, Ohio
Posts: 378
hunds02 is on a distinguished road
Quote:
Originally Posted by Zulu95 View Post
The AUX fan in SOP will run for as much as minutes after the vehicle is shut off. Some people throw out FSR/FSU as the reason for every AC woe. It's like an automatic reaction.
The TOTAL charge for the system is just under 1 can from all accounts. If you need to recharged then you must have a leak. I had to replace the Service Port (High & Low) seals some years ago. The OEM seals were revised and a kit issued for older models so that standard "O -rings" can be fitted from then on. Cost was $11 per port or so then.
I took it to an AC repair shop. They found the leak and installed the new seals that I supplied, vacuumed out the system and recharged everything with the proper amount of "freon and oil for $95. Worth it when you consider the price of other parts should the recharge be done wrong!
Well to be honest I don't know if it needs to be recharged, all I know is the aux fan is not coming on, and that I have cold air on the driver side. I may indeed have proper freon pressure. If it is true that low freon levels will cause the aux fan to shut off then it is probably low, but that doesn't mean I have a leak right? Freon was never added to the car since it was bought brand new in 2005.
__________________

2005 BMW X5 3.0i
2013 BMW M3 Competition
Reply With Quote

Sponsored Links

  #32  
Old 07-02-2012, 02:29 PM
TiAgX5's Avatar
Member
 
Join Date: Oct 2010
Location: Coppell,TX
Posts: 3,489
TiAgX5 is on a distinguished road
Quote:
Originally Posted by hunds02 View Post
My pressure level was 45 psi, but the aux fan is off so the pressure would read higher. So how do I know how much to add? I do not want to overcharge it. Is one can too much?
45 psi is fine if checked in an ambient temp of over 90deg F (the low pressure side reading will drop/rise with temp change). The system only holds around 14oz of R134a and 2oz of compressor oil, DO NOT ADD EVEN A SMALL (12oz) CAN! If you add do it in small (1 or 2 oz) increments.
Reply With Quote
  #33  
Old 07-02-2012, 02:32 PM
hunds02's Avatar
Member
 
Join Date: Mar 2007
Location: Cleveland, Ohio
Posts: 378
hunds02 is on a distinguished road
Quote:
Originally Posted by TiAgX5 View Post
45 psi is fine if checked in an ambient temp of over 90deg F (the low pressure side reading will drop/rise with temp change). The system only holds around 14oz of R134a and 2oz of compressor oil, DO NOT ADD EVEN A SMALL (12oz) CAN! If you add do it in small (1 or 2 oz) increments.
I understand this, which is why I didn't add any and immediately disconnected the can. But I feel like no one is addressing my main issue. That issue is that these pressure readings are not reliable if the aux fan is off, I don't know by how much but I need to know. Maybe I really have like 25 psi, I will never know what the actual pressure is since the aux fan is not coming off.
__________________

2005 BMW X5 3.0i
2013 BMW M3 Competition
Reply With Quote
  #34  
Old 07-02-2012, 02:34 PM
hunds02's Avatar
Member
 
Join Date: Mar 2007
Location: Cleveland, Ohio
Posts: 378
hunds02 is on a distinguished road
Quote:
Originally Posted by hunds02 View Post
I understand this, which is why I didn't add any and immediately disconnected the can. But I feel like no one is addressing my main issue. That issue is that these pressure readings are not reliable if the aux fan is off, I don't know by how much but I need to know. Maybe I really have like 25 psi, I will never know what the actual pressure is since the aux fan is not coming off.
last line is supposed to read :"since the aux fan is not coming ON"
__________________

2005 BMW X5 3.0i
2013 BMW M3 Competition
Reply With Quote
  #35  
Old 07-02-2012, 02:53 PM
TiAgX5's Avatar
Member
 
Join Date: Oct 2010
Location: Coppell,TX
Posts: 3,489
TiAgX5 is on a distinguished road
Quote:
Originally Posted by hunds02 View Post
I understand this, which is why I didn't add any and immediately disconnected the can. But I feel like no one is addressing my main issue. That issue is that these pressure readings are not reliable if the aux fan is off, I don't know by how much but I need to know. Maybe I really have like 25 psi, I will never know what the actual pressure is since the aux fan is not coming off.
You need to back probe the electrical connector on the aux fan to see if there is voltage. If the reading is OK, the fan will need to be replaced.
Reply With Quote
  #36  
Old 07-02-2012, 02:53 PM
Zulu95's Avatar
Member
 
Join Date: Mar 2005
Location: Show Me
Posts: 2,594
Zulu95 is on a distinguished road
Did you test the AUX fan and/or the AUX fan relay to see if it either is faulty?
__________________
Sent via Telegraph Wires using my Morse Key.
2015 X5
xDrive35i MSport
2013 X5 xDrive35i
Reply With Quote
  #37  
Old 07-02-2012, 03:01 PM
hunds02's Avatar
Member
 
Join Date: Mar 2007
Location: Cleveland, Ohio
Posts: 378
hunds02 is on a distinguished road
No not yet, I am at work but thanks for the suggestions, I will test the aux fan first thing when I get home
__________________

2005 BMW X5 3.0i
2013 BMW M3 Competition
Reply With Quote
  #38  
Old 07-02-2012, 04:06 PM
hunds02's Avatar
Member
 
Join Date: Mar 2007
Location: Cleveland, Ohio
Posts: 378
hunds02 is on a distinguished road
Anyone know where the aux fan relay may be?
__________________

2005 BMW X5 3.0i
2013 BMW M3 Competition
Reply With Quote
  #39  
Old 07-02-2012, 06:55 PM
hunds02's Avatar
Member
 
Join Date: Mar 2007
Location: Cleveland, Ohio
Posts: 378
hunds02 is on a distinguished road
I tried to pull the plug on the pressure switch on the lower AC line, however the fan still did not kick on. Is this the pressure switch I should be checking?
Name:  ImageUploadedByTapatalk1341269670.958455.jpg
Views: 223
Size:  13.6 KB
Name:  ImageUploadedByTapatalk1341269685.409806.jpg
Views: 235
Size:  13.8 KB

I will check the voltage on the aux fan later.
__________________

2005 BMW X5 3.0i
2013 BMW M3 Competition
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 03:35 AM.
vBulletin, Copyright 2022, 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.