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 > 3 Series / 4 Series > E46 (1999 - 2006)

E46 (1999 - 2006)
The fourth generation 3 Series (E46 chassis) was introduced in 1999 and set the standard for engineering and performance during it's years of production including being named to Car & Driver's 10 best list every one of those years! ! -- View the E46 Wiki

Reply
 
Thread Tools Display Modes
  #1  
Old 09-20-2013, 04:35 PM
oceanmaster66 oceanmaster66 is offline
Registered User
Location: NY
 
Join Date: May 2005
Posts: 7
Mein Auto: 2003 325I
E46 A/C Not Blowing

I have a 2003 E46 (325i) turned on the A/C and no air came out of the vents. I heard the compressor come on but nothing came out of the vents. A few days later it started working again until today, it just stopped blowing. When it was working over the last month it worked fine, the blower did not speed-up or slow down on its own. I checked fuse #50 (40A) and replaced with a new one, still didn't work. I also raised the heat to 91 degrees, it was 75 degrees today so it should have come on and still nothing out of the vents.

After reading through this forum it seems that the Blower Resistor (FSU) is a common component to fail causing no air to come out of the vents but it seems as though it becomes variable in speed before it dies. Mine just stopped altogether one day, started again, then died again.

Is there a way to find out if it's the Blower Resistor or the Blower motor??

Thanks

Last edited by oceanmaster66; 09-20-2013 at 04:37 PM.
Reply With Quote
Ads by Google
  #2  
Old 09-20-2013, 09:55 PM
GoForthFast GoForthFast is online now
Officially Welcomed to the 'Fest
Location: New York
 
Join Date: Jul 2004
Posts: 2,347
Mein Auto: '04 330Ci 6-speed
If your problem is intermittant, probably is the FSR.

Most every time this is the FSR. Motor is not frequent.

Can check the motor by opening up everything and applying voltage to the leads. This is not fun, so I'd play the odds and do the FSR first. That's not fun either.
Reply With Quote
  #3  
Old 11-11-2013, 08:50 AM
John S John S is offline
Registered User
Location: Northern NJ
 
Join Date: Jun 2008
Posts: 2
Mein Auto: 325 Xi Wagon
I've read everywhere that the most common reason that the blower fan speed fluctuates is due to the FSR. I've replaced mine (the FSR) twice, 2 brands. Still have the same problem.
In the process of changing out the blower itself. It has a low speed sqeek that's been there for 5+ years. I'm hoping that works. If not, any suggetions?
I was thinking it was the GM5, but no functionality listed indicates the blower motor.
My symptoms: fan speed goes up and down. When I hit the brakes, the fan speen drops to near zero, then returns to normal. Sometimes the fan does not blow at startup, but then blows 10 minutes later.
Thanks for the help
Reply With Quote
Reply

Bookmarks


Forum Navigation
Go Back   Bimmerfest - BMW Forums > BMW Model Discussions > 3 Series / 4 Series > E46 (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 10:44 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
© 2001-2011 performanceIX, Inc. All Rights Reserved .: guidelines .:. privacy .:. terms