E90Post
 


Coby Wheel
 
BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Technical Forums > DIY Guides > HVAC Blower Motor Replacement



Reply
 
Thread Tools Search this Thread
      01-27-2012, 06:28 PM   #23
J.P.
Close to bein Bannned
J.P.'s Avatar
United_States
106
Rep
5,068
Posts

Drives: Pussy Magnet
Join Date: May 2008
Location: Hunterdon, NJ

iTrader: (0)

does anyone know the part number for the black plastic piece (holds the 3 wires) that goes into the resistor, I just pleaced my blower motor and resistor and the wires are completely shot and melted...
__________________

Quote:
Originally Posted by sexye92 View Post
JERRYS MOM= BEST HEAD OF MY LIFE
Appreciate 0
      05-14-2012, 01:35 PM   #24
jsweiss
Registered
2
Rep
4
Posts

Drives: 2006 330xi
Join Date: Oct 2011
Location: Michigan

iTrader: (0)

Non Operating Fan Problem

Thanks to ENINTY and others for their contributions on this blower problem.

I have 2006 330xi and my fan stopped working completely. No heat, No AC, yet the digital display of the fan (low thru high) was still displaying.

I checked all of my fuses, which lead me nowhere. Next, I went after the blower unit while using ENINTY's notes as reference. I'd have to say that the directions are very clear. The only part that I got hung up on slightly was those 2 damn tabs on the blower that will stop you from turning the mechanism counter-clockwise.

Interestingly, now that I knew my fan was bad, I recall hearing screeching noises coming from the dashboard for the past few months. It also sounded like a windy bellowing at times then disappeared. This would happen for 1-2 seconds, then go away. It was perplexing.

After removing the blower, cleaning out some debris, and spraying some WD40 on the blower shaft, I was able to get my fan moving again. I re-installed it with a total cost of the job = $ 0.00.

I realize that my WD40 solution may very well have a limited life time but at least I know exactly what to do when the blower fails permanently.
Appreciate 1
      08-10-2012, 01:10 PM   #25
ozzy1
Private First Class
ozzy1's Avatar
7
Rep
107
Posts

Drives: e90 - 328xi
Join Date: Aug 2012
Location: MI

iTrader: (1)

Just to add to this, my fan started making the cricket sound as well only in AC and only in the 3 bar speed. Took the blower out and serviced as mentioned but then realized that the rusty shaft is completely visible through the hole when the cabin filter is removed. So, it may not be a bad idea to do a quick visual check thru there and if there is any rust on the shaft spray with lubricant. Used two straws taped together to reach in there and spray the shaft without getting it all over. Very clean and easy. Putting the plastic pieces of the ventilation system after blower servicing was a pita.
Appreciate 1
      08-27-2012, 07:47 PM   #26
AnkurGT
New Member
2
Rep
8
Posts

Drives: 2008 Jerez Black E90 M3
Join Date: May 2011
Location: Marietta,GA

iTrader: (0)

Garage List
So I just did this fix, my blower was fine but I WD-40d the spindle anyway just to eek out some more life from it. Looked like it had gotten wet, and the soundproofing on the lower dash panel had a small water stain on it. The only part that was burned out was the FSU, which I got from the dealer for $88+tax, which was price matched to ECS price plus shipping. I couldn't wait - it is still hot in GA. Took longer to drive to get the part than to do the fix. Great tutorial!

My question is, how do I prevent water ingress again? My gutters and screens on either side of the cowl are clear. Is there something else I am missing that may be blocked up? My car is parked outside (THE HORROR!)... so come fall, the leaves get everywhere...

Thanks!

EDIT: Oh also, with a little finesse, I was able to remove the blower/FSU assembly without fully removing the lower ducting which saved a big headache and some time. If you just loosen the duct off of the blower assembly and pull it down and toward the cabin slightly, you can rotate and drop the blower without much hassle.
Appreciate 1
      08-27-2012, 07:54 PM   #27
AnkurGT
New Member
2
Rep
8
Posts

Drives: 2008 Jerez Black E90 M3
Join Date: May 2011
Location: Marietta,GA

iTrader: (0)

Garage List
Quote:
Originally Posted by J.P. View Post
does anyone know the part number for the black plastic piece (holds the 3 wires) that goes into the resistor, I just pleaced my blower motor and resistor and the wires are completely shot and melted...
I think if your wiring harness is fried - it is pretty tough to service the FSU. My guess is you'd have to swap the whole FSU. That is what I did - because it smelled fried and had a big black burn mark on the wire socket.
Appreciate 0
      09-17-2012, 07:57 PM   #28
777ER
Lieutenant
777ER's Avatar
United_States
35
Rep
561
Posts

Drives: 2007 328xi
Join Date: Jan 2007
Location: NY

iTrader: (2)

I just replaced the blower motor in my E90 today. Took me 10 mins total and I don't know why everyone is making a big deal saying it's a PITA.

I followed the instructions and pulled down but did not remove the plastic duct that was in front. Was able to get the blower in and got it to lock without any effort.

My old blower had a different p/n on it and there was 3 leafs in there. It made a squealing noise one time and latey it makes a loud buzzing noise at max speed so it was time.
__________________
-Chris
2007 Montego Blue 328xi


Sedan | Poplar trim | Steptronic | Cold Package | Power front seats w/memory | Xenon Adaptive Headlights | PDC | 2008 Plate LED's | PBX | LUX v5.2
Appreciate 0
      10-06-2012, 06:46 AM   #29
georgere
Lieutenant Colonel
georgere's Avatar
United_States
585
Rep
1,935
Posts

Drives: 2016 M3 BSM
Join Date: Dec 2008
Location: Stamford CT

iTrader: (1)

Thanks for great DIY instructions. However, after installing the new motor (purchased from dealer), the motor makes noise on startup and when I turn it off. Any idea why? Do I have to oil the new blower before installation?



update: after running it for a couple of times, the noise is gone... There is one noise though that stays - opening and closing of the vent that is right above the blower.

Last edited by georgere; 10-06-2012 at 07:20 AM..
Appreciate 0
      10-13-2012, 05:05 PM   #30
nammerz
Enlisted Member
3
Rep
30
Posts

Drives: white/red
Join Date: Oct 2011
Location: PNW

iTrader: (0)

would this be the reason why my radiator fan surges up and down??
Appreciate 0
      10-14-2012, 08:13 PM   #31
georgere
Lieutenant Colonel
georgere's Avatar
United_States
585
Rep
1,935
Posts

Drives: 2016 M3 BSM
Join Date: Dec 2008
Location: Stamford CT

iTrader: (1)

Quote:
Originally Posted by nammerz View Post
would this be the reason why my radiator fan surges up and down??
nope. I think this might be the cooling system... I had similar symptoms and then the water pump died. I recommend you check that or just replace it if the cars age and mileage are on high side. My car had 90Kmi and 6.5 years old when repair was needed....

hope it helps...
Appreciate 0
      11-03-2012, 10:05 PM   #32
tokyowolverine
Registered
0
Rep
3
Posts

Drives: 2007 BMW 335i E90
Join Date: Nov 2012
Location: Toko, Japan

iTrader: (0)

Just did this!

Just wanted to thank ENINTY for posting this. I looked all over the net for instructions and these are absolutely the best.
The instructions were spot on.

This is definitely not a PITA job.
I never work on my car myself, but I was able to do this.

In the end, I didn't replace the motor, I took it into my house and sprayed some WD-40 like lubricant on the moving parts.

The only difficulty I encountered was what "int2str" mentioned about the little air duct piece that comes out from the center console area (it attaches to the longer piece that ENINTY describes as having the 3 feed holes that blow air out into the foot well).

Taking out the longer duct pieces wasn't a problem, but you do need to wrangle it out. I was afraid of breaking something, but you can pull on it a bit without destroying anything (there are no tabs or anything that might bend or break).

When replacing it, put the longer duct piece in FIRST. It will snap into place. THEN, wedge in the little duct piece and it will snap into the longer duct piece a lot easier.

I tried doing it the other way (small piece in first, then trying to wedge in the longer piece) and the longer piece kept being off and twisted just enought that nothing was snapping into place.

As for the big tab on the motor which you need to pull down in order to twist the motor out, luckily mine didn't break and snap off. I don't know if it was luck or me just being really careful.
Appreciate 0
      11-09-2012, 08:00 PM   #33
stoppy
Private
stoppy's Avatar
3
Rep
83
Posts

Drives: 2006 330i blk, Sport Pkg, 6spd
Join Date: Apr 2012
Location: Ontario

iTrader: (4)

Thanks for this write up, did this tonight. Wish there was more room in that damn foot well.
I am with most of the people here in that the duct work is the hardest part to get back in. Mainly that little one. Had I have kept reading I would have discovered the total duct work removal is not required, but anyway was to to bad. Big duct piece first (loose) followed by smaller duct piece, click together, then click the big piece into place.

I didn't replace, just WD40'd the motor to see if that will solve my issue. Otherwise ill go in there again and replace.
Appreciate 0
      12-09-2012, 04:31 PM   #34
sirseko
Registered
Switzerland
0
Rep
4
Posts

Drives: 2008 E92 320i Coupe
Join Date: Aug 2012
Location: Zurich, Switzerland

iTrader: (0)

Great DIY, attempting this on my own now, though not sure if I'll have replace the blower motor.

In my case, no air comes out of the vents at all, however I can hear the blower motor rolling just fine. I've tried all sorts of combinations, A/C on, A/C off, min fan speed to max fan speed, but no air was blowing whatsoever...

Then I removed the glove box and the air tube, and voila, that shutter (flap?) that would make air travel thru the air tube appeared to be plain shut all the time.

Has this something to do with the blower motor, or something else let's say the final stage resistor unit (FSU)?

Thanks for the help!
Appreciate 0
      12-15-2012, 03:26 PM   #35
Neil_s335i
Registered
0
Rep
1
Posts

Drives: Artic White 335i sedan w/stick
Join Date: May 2012
Location: Chico, CA

iTrader: (0)

Blower motor DIY

Thanks man! Good DIY instructions. Much appreciated.
Appreciate 0
      12-16-2012, 07:26 AM   #36
David330i06
Registered
0
Rep
4
Posts

Drives: 2006 330i silver
Join Date: Dec 2010
Location: San Diego

iTrader: (0)

Awesome write up's

Thank you ENTITY for posting the write up and thanks to everyone else for all of the feedback. Now that I have read everything I'm going to attempt to WD40 the shaft bearing and if that does not work I'll replace the blower motor.

Just for clarification,What are the symptoms of the resistor being bad?

For me my blower does not work at all despite indicating correctly on the climate indicator.
Appreciate 0
      01-08-2013, 05:51 PM   #37
Dannyboy
Lieutenant
37
Rep
401
Posts

Drives: 2006 E90
Join Date: Dec 2012
Location: New Jersey

iTrader: (0)

Fried fsu and connector

Thanks for the excellent write up...I was able to pull out the blower in ten minutes. I would'nt of been able to do it without it.
However when I pulled it out I noticed the wires going into the FSU were corroded and bare because the wire sheild was brittle and fell apart.

I was wondering if I need to replace the black clip that plugs into the FSU or if I could just cut the wires strip and place back into the clip/housing .

Also if I have to replace the clip whats the part number. I checked realoem and couldnt find it.

Thanks

The FSU socket was black so I'massuming I have to change it.

Last edited by Dannyboy; 01-08-2013 at 05:53 PM.. Reason: adding line
Appreciate 0
      01-10-2013, 04:53 PM   #38
Dannyboy
Lieutenant
37
Rep
401
Posts

Drives: 2006 E90
Join Date: Dec 2012
Location: New Jersey

iTrader: (0)

Just to follow up...I found the part number for the clip that attached to the FSU. It turns out it was the clip that caused it to stop working. I didnt need to replace the FSU or blower...I got lucky.

Thanks again for the excellent write up!
Appreciate 0
      01-13-2013, 04:33 PM   #39
e2d
Private
e2d's Avatar
United_States
12
Rep
98
Posts

Drives: 2016 M4
Join Date: Sep 2008
Location: Chicago, USA

iTrader: (0)

Quote:
Originally Posted by Dannyboy View Post
Just to follow up...I found the part number for the clip that attached to the FSU. It turns out it was the clip that caused it to stop working. I didnt need to replace the FSU or blower...I got lucky.

Thanks again for the excellent write up!
Dannyboy, where'd you pick up the blower motor from? Was it on ebay? Doing some shopping around because of a similar problem I'm having, I found it for 90 bucks on ebay. However, other sites have it for about 150 but they say that's the blower motor and regulator. Not sure if that makes a difference or not?
Appreciate 0
      01-29-2013, 07:24 AM   #40
AllBlackBimmer
Colonel
AllBlackBimmer's Avatar
United_States
813
Rep
2,868
Posts

Drives: 2019 X3 m40i
Join Date: Aug 2011
Location: Northeast

iTrader: (-1)

Do you need to disconnect the battery or anything before you do this DIY?

When buying the Blower, does it come with all the other parts/wires and whatnot that many of you are saying will need replace because they are either fried or burnt out.

Where have you guys been buying your blowers from? I saw one guy bought from ebay, but i would only do that if it was a reputable seller...
__________________
2019 X3 m40i:Carbon Black:Executive:Premium:Adaptive:Vernasca:699M:HK: Ambient:IND trim:M Mirrors:15mm spacers:Maxton lip:20% tint windows/pano:dsg paddles:TLG mudflaps
2008 328i E90 Jet Black:6MT:RWD:Premium:Sport:Xenon:MTEC V3 AEs:Front Splitters:CF spoiler:19" VMR FF v710
Appreciate 0
      01-29-2013, 09:31 AM   #41
FCobra94
Guest
0
Rep
n/a
Posts

Drives:


Quote:
Originally Posted by ZZZZ View Post
my blower fan works fine, but it squeaks like a strangled mouse on the lowest two fan settings. do I need a new motor, or is there something I can fix/grease/oil up to alleviate the annoying noise?
I had the same sound as in the youtube vid posted in the first couple of replies in this thread. All I did was take off the cabin filter cover and shoot some WD40 on the shaft of the blower motor...good as new and zero noise!
Appreciate 0
      01-30-2013, 09:10 AM   #42
DUI Elite
///M at Heart
DUI Elite's Avatar
89
Rep
1,954
Posts

Drives: 06 SGM E90, 15 BSM E84
Join Date: Jan 2011
Location: Chicago, IL

iTrader: (4)

Quote:
Originally Posted by FCobra94 View Post
I had the same sound as in the youtube vid posted in the first couple of replies in this thread. All I did was take off the cabin filter cover and shoot some WD40 on the shaft of the blower motor...good as new and zero noise!
pics of where you shot WD40?

Mine has developed a cricket noise exactly like mkPOTO's video.
Appreciate 0
      01-30-2013, 08:53 PM   #43
Efthreeoh
General
United_States
16946
Rep
18,580
Posts

Drives: The E90 + Z4 Coupe & Z3 R'ster
Join Date: May 2012
Location: Virginia

iTrader: (0)

Quote:
Originally Posted by DUI Elite View Post
pics of where you shot WD40?

Mine has developed a cricket noise exactly like mkPOTO's video.
No pics needed. Just remove the cabin airfilter housing cover and look into the air intake hole in front of the passenger side windshield and you'll see it. It will have rust on the end of the shaft in the middle of the fan blade. Use a flashlight. Enjoy the WD-40 smell for a while.
Appreciate 0
      01-31-2013, 05:44 PM   #44
FCobra94
Guest
0
Rep
n/a
Posts

Drives:


Quote:
Originally Posted by Efthreeoh View Post
No pics needed. Just remove the cabin airfilter housing cover and look into the air intake hole in front of the passenger side windshield and you'll see it. It will have rust on the end of the shaft in the middle of the fan blade. Use a flashlight. Enjoy the WD-40 smell for a while.
What he said...the smell goes away in about a day or so though.
Appreciate 0
Reply

Bookmarks

Thread Tools Search this Thread
Search this Thread:

Advanced Search

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



All times are GMT -5. The time now is 05:29 PM.




e90post
Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
1Addicts.com, BIMMERPOST.com, E90Post.com, F30Post.com, M3Post.com, ZPost.com, 5Post.com, 6Post.com, 7Post.com, XBimmers.com logo and trademark are properties of BIMMERPOST