Results 1 to 8 of 8

Thread: DIY: Blower Motor Replacement

  1. #1
    Join Date
    Jan 2017
    Location
    CT
    Posts
    5
    My Cars
    1994 530it

    DIY: Blower Motor Replacement

    The blower on my 1994 530it has been intermittently making a gruesome squealing noise, so I figured it was time to replace the unit before it bursts into flames. I ordered a $50 replacement from Car Parts Wholesale on eBay which seems to be working great, so that's a nice way to save $200 compared to an OEM replacement. The job is pretty straightforward, it took me a few hours working at a leisurely pace. The hardest part is just getting everything out of the way in order to access the blower.

    Parts Needed:
    Blower Motor- 64 11 1 468 542
    3/8" hose clamp for coolant overflow line
    Zip ties

    Step 1: Remove coolant expansion tank

    If your coolant tank is at the back of your engine bay, you'll need to move it out of the way. You don't need to drain the tank and completely remove it, you just need to get it away from the firewall. There are two hoses and an electrical connector on top of the tank that will need to be disconnected. The coolant overflow line on the driver side is held on by a hose clamp, while the smaller air hose on the passenger side should just pull right off. After these are all detached, you can remove the two bolts holding the tank onto the firewall, and push the tank out of the way. I just rested it on top of the intake manifold, with a few paper towels underneath to catch any spilled coolant.



    Step 2: Remove positive jumper terminal and diagnostic port

    You'll have to take the plastic covers off of the jumper terminal, and unbolt it from the bracket it's mounted to. Then you can unbolt this bracket, and pull it off with the diagnostic port.



    Step 3: Remove wiring harness cover
    The wiring harness is attached to a cover with zipties- cut all of these zipties, and then unbolt both sides of the cover and remove it from the firewall. You may also need to remove a small throttle cable bracket on the driver side.



    Step 4: Remove firewall panel

    The firewall has a big removable panel covering the blower motor- this needs to be removed. It is held on by five bolts- one in each corner, and one on the bottom center.



    Step 5: Remove plastic covers

    There are two plastic covers in front of the blower motor- the large outer cover can be pulled right out. You may have to slightly bend the plastic to get it out, so do this carefully. After this is removed, you'll see the smaller inner cover which is held on by a plastic strap and two metal clips on the bottom corners. Unclip these, being careful not to lose them, and then unhook the strap. This strap is very tight, so you may need to use something like a screwdriver for extra leverage to pry it apart.



    Step 6: Remove blower motor

    Woohoo, you've finally found the blower motor! To get it out you need to unplug the two wires powering it, and then remove the metal strap holding it on. This can be tricky- you need to pull up on the bottom of the strap to release it. This works best if you have some sort of tool to pry with- I used a paint can opener to hook onto the strap. Once this is off you can go ahead and pull the blower motor out- I found it easiest to pull the passenger side out first, then rotate it upwards to get the driver side out.



    Step 7: Install new blower motor

    Put the new blower motor in the same way you took out the old one, strap it down, and plug it in. Make sure the blower is oriented properly and then hook the top of the strap in first, before pushing down on the bottom to lock it in. It's a good idea to turn your fan on and test the new blower to make sure it works right before covering everything back up- just make sure there's nothing in the way that will interfere with the fan blades.



    Step 8: Put it all back together!

    Installation is the reverse of removal. If your car is anything like mine there will be 20+ years of grime built up on all the parts you took out, so I'd recommend cleaning everything before you put it back in. Use new zipties to attach the wiring harness, and use a new hose clamp for the coolant overflow line. If all went well, you can now enjoy your car with a working blower!

  2. #2
    Join Date
    Jan 2005
    Location
    Japan
    Posts
    44,775
    My Cars
    11/88 E32 750iL+98 E36M3
    Thanks, I moved a copy to the E34 DIY site
    SHOGUN'S TRICKS AND TIPS FOR THE SEVEN SERIES
    http://twrite.org/shogunnew/topmenu.html

  3. #3
    Join Date
    Mar 2012
    Location
    Baltimore, Maryland
    Posts
    4,491
    My Cars
    1999 740iLA, 1990 535iM
    I ordered the same part and mone has arrived. Awaiting the sword to do both at the same time
    1990 Bmw 535i

    1999 740iL: Sold
    1997 740i: Crashed and Parted
    1988 535i: Crashed and Parted
    1988 528e: Crashed and parted

  4. #4
    Join Date
    Oct 2008
    Location
    Oxnard, CA
    Posts
    5,302
    My Cars
    '91 M5, '94 M5
    Who is this imposter?
    Current Fleet:
    E34 1991 M5 Macaoblau on Complete (ruined)Leather Champagne (1/1 in North America) - http://forums.bimmerforums.com/forum....php?t=1705166

    Past:
    E34 1989 535i 5-Speed AlpineweissII on Natur - Parted
    E34 1992 525i 5-Speed Islandgrun on Pergament - Parted
    E34 1995 540i 6-Speed ShwarzII on Shwarz - Sold to Sneezy.
    E34 1995 525i 5-Speed Calypso Red on Parchment - http://forums.bimmerforums.com/forum....php?t=1748143 - Sold locally.
    E39 1998 528i 5-Speed Black on Black - Sold locally.
    E34​ 1993 M5 Alpinweiss on Black - http://forums.bimmerforums.com/forum...lpinweissII-M5 - Parted


  5. #5
    Join Date
    Jan 2017
    Location
    CT
    Posts
    5
    My Cars
    1994 530it
    Damn, there's already a person with my name and an E34?! I can never seem to be original these days... Well at least I know how to spell "Green"

  6. #6
    Join Date
    Mar 2012
    Location
    Baltimore, Maryland
    Posts
    4,491
    My Cars
    1999 740iLA, 1990 535iM
    Quote Originally Posted by TGreene View Post
    Who is this imposter?
    I said the same thing

    - - - Updated - - -

    Quote Originally Posted by TGreen2584 View Post
    Damn, there's already a person with my name and an E34?! I can never seem to be original these days... Well at least I know how to spell "Green"
    "Greene" seems to be a suitable last name

    "Green" seems to be a suitable crayon color

    1990 Bmw 535i

    1999 740iL: Sold
    1997 740i: Crashed and Parted
    1988 535i: Crashed and Parted
    1988 528e: Crashed and parted

  7. #7
    Join Date
    Dec 2004
    Location
    CT, USA
    Posts
    3,791
    My Cars
    e28, e34, e39
    Too funny. Will read again.

    After all this snow today I think I'll change my name to White.
    demet
    88'535is, 88'M5, 89'535i, 01'525it

  8. #8
    Join Date
    Mar 2012
    Location
    Baltimore, Maryland
    Posts
    4,491
    My Cars
    1999 740iLA, 1990 535iM
    We got a half an inch.down here. Will be all gone to marrow probably
    1990 Bmw 535i

    1999 740iL: Sold
    1997 740i: Crashed and Parted
    1988 535i: Crashed and Parted
    1988 528e: Crashed and parted

Similar Threads

  1. How to remove dash for blower motor replacement DIY
    By RandallPhoto in forum 1996 - 2003 (E39)
    Replies: 22
    Last Post: 02-24-2017, 12:09 AM
  2. DIY - BMW E34 M5 Blower Motor Replacement
    By stilljester in forum 1988 - 1996 (E34)
    Replies: 4
    Last Post: 08-19-2016, 06:09 PM
  3. blower motor replacement help. (86 325e)
    By MikeVance in forum 1983 - 1991 (E30)
    Replies: 7
    Last Post: 09-16-2007, 09:28 PM
  4. Need Help ASAP, car wont start after blower motor replacement
    By ledzep244 in forum 1983 - 1991 (E30)
    Replies: 2
    Last Post: 06-26-2007, 08:01 PM
  5. Help need Blower motor replacement Guide
    By paghmani911 in forum 1991 - 1999 (E36)
    Replies: 0
    Last Post: 08-09-2006, 12:37 AM

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •