Welcome to Bimmerfest -- The #1 Online Community for BMW related information! Please enjoy the discussion forums below and share your experiences with the 200,000 current, new and past BMW owners. The forums are broken out by car model and into other special interest sections such as BMW European Delivery and a special forum to voice your questions to the many BMW dealers on the site to assist our members!

Please follow the links below to help get you started!

Go Back   Bimmerfest - BMW Forums > BMW Model Discussions > X Series > X5 E53 (1999 - 2006)

X5 E53 (1999 - 2006)
The X5 SAV Forum

Reply
 
Thread Tools Display Modes
  #1  
Old 06-20-2017, 10:06 AM
matthew428 matthew428 is offline
Registered User
Location: Georgia
 
Join Date: Aug 2015
Posts: 14
Mein Auto: 1995 BMW 318I
Aux/Electric Fan Not Coming on at Startup with A/C Turned On

I have read a lot about aux fan issues, but can't pin point what my problem is.

2004 BMW X5 3.0
My problem is that I do not have a/c until my coolant temperature reaches it's operating temperature. At that time, the AUX fan comes on along with the compressor kicking on and I have ice cold a/c for the rest of my trip. It appears that my aux fan is only working in overheat mode. So the fan works in overheat mode, but the slow speed mode that the a/c needs will not work. There is obviously a connection between the fan coming on which triggers my a/c compressor to kick on. Is this a sign that the fan needs replacing again (I replaced it 20,000 miles ago )? Any help to diagnose this issue is very much appreciated. Thanks.
Reply With Quote
Advertisement
  #2  
Old 06-20-2017, 10:43 AM
crowz's Avatar
crowz crowz is online now
Officially Welcomed to the 'Fest
Location: Alabama
 
Join Date: Oct 2006
Posts: 5,052
Mein Auto: '00 323i/97 528i/05 X5
The compressor is going bad. My X5 was doing that when I got it. Eventually it took up to an hour of driving before the a/c would come on. Then it worked great.

Replaced the compressor for $110 and it works perfect now. Starts cooling instantly now.
__________________
Reply With Quote
  #3  
Old 06-20-2017, 10:45 AM
crowz's Avatar
crowz crowz is online now
Officially Welcomed to the 'Fest
Location: Alabama
 
Join Date: Oct 2006
Posts: 5,052
Mein Auto: '00 323i/97 528i/05 X5
Oh the temperature has nothing to do with it by the way. Also its not that the fan is working in "overheat" mode or anything its just kicking in when the compressor finally starts working.
__________________
Reply With Quote
  #4  
Old 06-20-2017, 10:49 AM
matthew428 matthew428 is offline
Registered User
Location: Georgia
 
Join Date: Aug 2015
Posts: 14
Mein Auto: 1995 BMW 318I
It's just odd that when the second my coolant temp gets to the optimal operating temperature the fan comes on along with the compressor. It's not an inconsistent thing which makes me believe it's something else. The compressor is waiting for that fan to come on. Just need to figure out why it doesn't come on when I start my a/c.

Last edited by matthew428; 06-20-2017 at 10:51 AM.
Reply With Quote
  #5  
Old 06-20-2017, 10:56 AM
crowz's Avatar
crowz crowz is online now
Officially Welcomed to the 'Fest
Location: Alabama
 
Join Date: Oct 2006
Posts: 5,052
Mein Auto: '00 323i/97 528i/05 X5
It gets worse with time. It takes longer and longer for it to kick in.

If you want to know for sure if its the fan run cold water over the radiator by spraying it with a garden hose. That's far cooler than the fan can ever make it and you will find it the a/c doesn't come on any sooner.
__________________
Reply With Quote
  #6  
Old 06-20-2017, 10:58 AM
crowz's Avatar
crowz crowz is online now
Officially Welcomed to the 'Fest
Location: Alabama
 
Join Date: Oct 2006
Posts: 5,052
Mein Auto: '00 323i/97 528i/05 X5
Also look at the compressor clutch. I bet its running the entire time. If it is and its not cooling but then goes to cooling after that delay then the compressor is bad.
__________________
Reply With Quote
  #7  
Old 06-20-2017, 11:02 AM
crowz's Avatar
crowz crowz is online now
Officially Welcomed to the 'Fest
Location: Alabama
 
Join Date: Oct 2006
Posts: 5,052
Mein Auto: '00 323i/97 528i/05 X5
The older systems had normal compressors. So if the compressor is running its cooling. The newer one like my 2005 has and your 2004 is a variable displacement setup. We don't have a low pressure switch cycling the compressor. Our compressors run all the time. A valve inside the compressor handles pressure keeping the pressure ideal at all rpms etc. This valve setup and the backplate fail with age. This the slow to start cooling but cools great when it decides to finally come on. The delay starts out pretty short as its failing but gets longer and longer. The usual symptoms I found for the start of the problem is a 2 minute delay. This works up to 5 minutes then 10 and gets worse.

Mine had reached the 1 hour point before I changed it.
__________________
Reply With Quote
  #8  
Old 06-20-2017, 11:09 AM
matthew428 matthew428 is offline
Registered User
Location: Georgia
 
Join Date: Aug 2015
Posts: 14
Mein Auto: 1995 BMW 318I
I could live with the 5 minute delay, but my wife can't. Lol. I may have to clean the clutch real good and do some maintenance and see if it helps. I have to do that every year with my E36.
Reply With Quote
  #9  
Old 06-20-2017, 11:14 AM
crowz's Avatar
crowz crowz is online now
Officially Welcomed to the 'Fest
Location: Alabama
 
Join Date: Oct 2006
Posts: 5,052
Mein Auto: '00 323i/97 528i/05 X5
Its not something you can clean its the backplate inside the compressor.

The only thing you can actually do without taking the compressor completely apart is to replace the valve in the side. Some people have had luck with that. I even tried that but it didn't help. Autozone has the valve and its $12.99. You will have to recharge the Freon if you do the valve.

Odds are not in your favor on the valve fix but its possible it might work.

Again the compressor isn't but $110 brand new.
__________________
Reply With Quote
  #10  
Old 06-20-2017, 11:18 AM
matthew428 matthew428 is offline
Registered User
Location: Georgia
 
Join Date: Aug 2015
Posts: 14
Mein Auto: 1995 BMW 318I
Yeah I would just replace the compressor instead replacing the valve. The thing is I don't have a vacuum to clean the lines with.
Reply With Quote
  #11  
Old 06-20-2017, 11:22 AM
crowz's Avatar
crowz crowz is online now
Officially Welcomed to the 'Fest
Location: Alabama
 
Join Date: Oct 2006
Posts: 5,052
Mein Auto: '00 323i/97 528i/05 X5
$45

http://www.ebay.com/itm/3-5-CFM-Rota...3D172699595576
__________________
Reply With Quote
  #12  
Old 06-20-2017, 11:23 AM
crowz's Avatar
crowz crowz is online now
Officially Welcomed to the 'Fest
Location: Alabama
 
Join Date: Oct 2006
Posts: 5,052
Mein Auto: '00 323i/97 528i/05 X5
I should of bought more of the one I have. Mine was $10 at the local auction thing they have here.
__________________
Reply With Quote
  #13  
Old 06-20-2017, 11:25 AM
matthew428 matthew428 is offline
Registered User
Location: Georgia
 
Join Date: Aug 2015
Posts: 14
Mein Auto: 1995 BMW 318I
Not bad but I would have to get the one with the gauges. Cheaper than I thought though.
Reply With Quote
  #14  
Old 06-20-2017, 12:13 PM
matthew428 matthew428 is offline
Registered User
Location: Georgia
 
Join Date: Aug 2015
Posts: 14
Mein Auto: 1995 BMW 318I
Quote:
Originally Posted by crowz View Post
It gets worse with time. It takes longer and longer for it to kick in.

If you want to know for sure if its the fan run cold water over the radiator by spraying it with a garden hose. That's far cooler than the fan can ever make it and you will find it the a/c doesn't come on any sooner.
Just drove home in the rain and had a/c the whole time. My temp was slightly cooler than normal and it looked like my fan was on.
Reply With Quote
  #15  
Old 06-20-2017, 12:18 PM
crowz's Avatar
crowz crowz is online now
Officially Welcomed to the 'Fest
Location: Alabama
 
Join Date: Oct 2006
Posts: 5,052
Mein Auto: '00 323i/97 528i/05 X5
Once it comes on it should keep working till you leave it sitting for awhile. Its weird I know. I never had run into this before buying my X5 and Ive done a few hundred ac jobs in my lifetime.

Also if the temp gauge isn't in the dead center your thermostat is going bad too Usually sets a check engine light when it does that on an e46. Not sure on the e53 on the check engine light.
__________________
Reply With Quote
  #16  
Old 06-20-2017, 12:28 PM
matthew428 matthew428 is offline
Registered User
Location: Georgia
 
Join Date: Aug 2015
Posts: 14
Mein Auto: 1995 BMW 318I
Quote:
Originally Posted by crowz View Post
Once it comes on it should keep working till you leave it sitting for awhile. Its weird I know. I never had run into this before buying my X5 and Ive done a few hundred ac jobs in my lifetime.

Also if the temp gauge isn't in the dead center your thermostat is going bad too Usually sets a check engine light when it does that on an e46. Not sure on the e53 on the check engine light.
Tstat and coolant sensor and water pump has been recently replaced. I've had so many issues with it but heck it's paid for.
Reply With Quote
  #17  
Old 06-20-2017, 12:45 PM
crowz's Avatar
crowz crowz is online now
Officially Welcomed to the 'Fest
Location: Alabama
 
Join Date: Oct 2006
Posts: 5,052
Mein Auto: '00 323i/97 528i/05 X5
Gauge should stay in the middle all the time if its working right and you didn't put in some kind of low temp stat. But running cool is better than running hot

Yeah paid off is always a good thing !
__________________
Reply With Quote
Reply

See More Related BMW Stories


Forum Navigation
Go Back   Bimmerfest - BMW Forums > BMW Model Discussions > X Series > X5 E53 (1999 - 2006)
Today's Posts Search
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 On



Forum Jump


All times are GMT -7. The time now is 10:47 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
© 2001-2015 performanceIX, Inc. All Rights Reserved .: guidelines .:. privacy .:. terms