Home Forums Articles How To's FAQ Register
Go Back   Xoutpost.com > BMW SAV Forums > X5 (E53) Forum
Fluid Motor Union
User Name
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

LinkBack Thread Tools Display Modes
Old 07-13-2018, 01:16 PM
Join Date: Jun 2013
Location: huntington beach
Posts: 47
pghguy517 is on a distinguished road
AC not working, any ideas? 2005 X5 4.4

Hello, my AC stopped working, just blows ambient air. Last year I replaced the variable displacement valve in the compressor, drier desiccant element, evacuated the system and recharged to factory amount. It always took 10-15 minutes to start blowing cold, even after I replaced the compressor valve. The clutch always engaged right away, but now the clutch doesn't engage at all. The system has pressure, 130 psi on both high and low sides (equalized pressure since the clutch isn't on and compressor isn't compressing). I can rotate the compressor by hand with no binding, seems like it should do something if the clutch would engage). My guess is something to do with control or a bad clutch coil. The 2005 X5 4.4L only has one fan, no auxiliary fan in front of radiator/condenser assembly, and it comes on when engine is hot, but the fan doesn't come on when the engine is cold and AC is on.
Could someone please tell me how to test the fan controls, and explain how it should operate as related to the AC system?
Also, where is the low pressure switch? I see the high pressure switch, but don't see any switches on the low side under the hood. Could it be under the dash near the evap core and expansion valve?
In general, how do I check the fan controls, and high & low pressure switches. Pretty sure I know how the check the clutch coil and need to do that first. Also, I checked the fuses and all are good.
Thank you!
Reply With Quote

Sponsored Links

Old 07-13-2018, 05:35 PM
Join Date: Mar 2016
Location: Saskatchewan Canada
Posts: 844
80stech is on a distinguished road
As far as I know the only pressure switch is on the high side and it is actually not a switch but a sending unit so that it can tell the IHKA how high or low the pressure is and operate the aux fan and compressor accordingly.
1988 325is (purchased new)
2004 X5 3.0 (new to me) 2005 X3 2.5 (new to wife)
Reply With Quote
Old 07-14-2018, 02:09 AM
Join Date: May 2018
Location: Las Vegas
Posts: 88
titodj is on a distinguished road
If it was taking time to start cooling, the compressor was failing, I used ICE-32 to ease the problem, but ended up replacing the compressor, I think yours just went Kaput...
Reply With Quote
Old 07-15-2018, 10:52 PM
upallnight's Avatar
Join Date: Aug 2012
Location: Cook County
Posts: 6,286
upallnight is on a distinguished road
Could be the air gap between the clutch plate and coil is great enough that the coil isn't strong enough to pull the clutch plate to engage the compressor. Turn on the AC and with the engine running give the clutch plate a little nudge. Does the compressor engage? Be careful as the clutch plate could suddenly engage and knock whatever you use to nudge it into you or so other parts of the engine.

Or if you're an old school DIYer, just take out a set of feeler gauge and see what the clearance is.
2006 Infiniti G35
2001 BMW 3.0I E53 X5 Build date 08/2000
Lotus Europa 1970 Destroyed by fire
Lotus Europa 1970 S2 Renault Powered
Lotus Type 52 1970 Twincam Webers Powered
PORSCHE 911 Targa 1982 The Garage Queen
Audi Avant donated to Kars for Kids
BMW 525IT Sold
Audi 4000CS Quattro Sold
Jensen Healey Lotus Powered Sold
Opel 1900 Sold
Triumph Spitfire 1971 Sold
Triumph Spitfire 1968 Sold
Plymouth "Cuda" 340 Six pack SOLD
Reply With Quote
Old 10-21-2018, 10:56 PM
Join Date: Jun 2013
Location: huntington beach
Posts: 47
pghguy517 is on a distinguished road
Finally had some time to look into this, the compressor clutch coil was bad. I was able to buy one on ebay and replace the coil without removing the compressor or opening up the system. The gap between the clutch plate and pulley is .014".
Thanks all for your help on this!
Reply With Quote


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 01:55 PM.
vBulletin, Copyright 2019, 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.