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
  #1  
Old 04-05-2010, 04:33 PM
faz faz is offline
Member
 
Join Date: Nov 2008
Location: Bay Area, CA
Posts: 553
faz is on a distinguished road
Auxiliary fan, weird behavior?

Just a quick question and hopefully someone with experience on this can chime in.

Yesterday was the second time that I noticed this happening. We have a friend whose driveway is a steep uphill, but only 20 yards or so long. We usually get to their place after about 45 minutes of freeway travel.

For a second time now, I have noticed that when I park the car on their driveway, the auxiliary fan (the electrical one in front of the radiator) stays on for a few minutes. It doesn't do it after driving on the freeway in other occasions though.

Yesterday the weather was cool and rainy, no A/C was on... just a normal 80 mph travel for about 40 minutes, and up this steep driveway for about 20 yards.

Both times (yesterday and a couple of months back), I have waited a minute or two for it to turn itself off, it hasn't. I start the engine and stop it again, and it stops.

I am assuming there is not much to worry about here, but it is just interesting to see this repeat itself only in this scenario. Is this the normal behavior? how long does it take for the fan to switch itself off? (yesterday, it was on for about 2 minutes before I turned the car on/off and it shut itself down.)
__________________
Currently driving: 2011 E70 x35i , 2011 E90 335d
Previous BMWs: 2007 E90 328i , 2005 E53 3.0i, 2011 F10 535i (6spd manual)
Reply With Quote

Sponsored Links

  #2  
Old 04-06-2010, 12:50 AM
Kunphuzi0n's Avatar
Member
 
Join Date: Nov 2009
Location: Tennessee
Posts: 86
Kunphuzi0n is on a distinguished road
The fan runs whenever the engine is warm. It does sem to be a bit random sometimes but it should turn off after a few min. I wouldn't be worried until it stayed on for more than 10-15 min. Mine freaked me out the first time it happened but after I have gotten use to it I don't give it a second thought. Actually nice to think that my BMW is taking care of it self even when the engine is off.
__________________
'03 X5 3.0 -Stahlgrau-
Reply With Quote
  #3  
Old 04-06-2010, 01:38 PM
faz faz is offline
Member
 
Join Date: Nov 2008
Location: Bay Area, CA
Posts: 553
faz is on a distinguished road
Thanks for the feedback. Looking at the vehicle history, I see a fix with auxiliary fan with the previous owner:

6/21/08 40030 electric auxiliary fan pressure fan malfunction


I was just wondering if the behavior I see now is the norm, or if it is a malfunction again.

Thanks again.
__________________
Currently driving: 2011 E70 x35i , 2011 E90 335d
Previous BMWs: 2007 E90 328i , 2005 E53 3.0i, 2011 F10 535i (6spd manual)
Reply With Quote
  #4  
Old 04-06-2010, 02:38 PM
Kunphuzi0n's Avatar
Member
 
Join Date: Nov 2009
Location: Tennessee
Posts: 86
Kunphuzi0n is on a distinguished road
Sounds more like the fan wasn't working right. More like not spinning properly. But I don't know for sure. Do you have contact with the previous owner? If not maybe one of the mechanics on here would know more.
__________________
'03 X5 3.0 -Stahlgrau-
Reply With Quote
  #5  
Old 04-06-2010, 03:06 PM
JCL's Avatar
JCL JCL is offline
Premier Member
 
Join Date: Mar 2005
Location: Vancouver, Canada
Posts: 11,853
JCL will become famous soon enoughJCL will become famous soon enough
You need to give it a few more minutes to cool the engine down. When you shut it off hot, it is in effect a hot soak, and the engine gets hotter than when it was running (since the water pump isn't circulating coolant). When you restarted it, you circulated the coolant.

Give it more time, and if it shuts off after 5 minutes then you are fine.
__________________
2007 X3 3.0si, 6 MT, Premium, White

Retired:
2008 535i, 6 MT, M Sport, Premium, Space Grey
2003 X5 3.0 Steptronic, Premium, Titanium Silver

2002 325xi 5 MT, Steel Grey
2004 Z4 3.0 Premium, Sport, SMG, Maldives Blue
Reply With Quote
  #6  
Old 04-06-2010, 04:43 PM
faz faz is offline
Member
 
Join Date: Nov 2008
Location: Bay Area, CA
Posts: 553
faz is on a distinguished road
Great. Thanks for the feedback guys.
__________________
Currently driving: 2011 E70 x35i , 2011 E90 335d
Previous BMWs: 2007 E90 328i , 2005 E53 3.0i, 2011 F10 535i (6spd manual)
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 07:48 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.