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DIY: Do It Yourself
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Old 08-13-2019, 04:20 PM   #21
wfx32
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5) For 600W fan: Use dremel-type tool or saw to remove lower right arm on frame of cooling fan that will reside where the A/C compressor is located
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Originally Posted by itongx View Post
did you have coolant temp datalog when running with this configuration and any issue so far seem low clearance between the engine and the fans
these 600W fans were installed on stock Z4 and X3 with 'hot climate' package back in 2005. so they should fit the regular (non M3) E46 just fine, as long as you [1] convert the three pin connector and [2] remove that lower right arm so that it clears the AC compressor.

Last edited by wfx32; 08-13-2019 at 04:22 PM.
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Old 08-16-2019, 12:44 AM   #22
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Originally Posted by wfx32 View Post
these 600W fans were installed on stock Z4 and X3 with 'hot climate' package back in 2005. so they should fit the regular (non M3) E46 just fine, as long as you [1] convert the three pin connector and [2] remove that lower right arm so that it clears the AC compressor.
from the image it slighlty difference in fan size ? believe that e46 used 16" and what about x3 and z4 are they 19"
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Old 08-16-2019, 07:15 PM   #23
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from the image it slighlty difference in fan size ? believe that e46 used 16" and what about x3 and z4 are they 19"
mount points on the radiator are the same (plastic rivet on driver side, torx screw on passenger side). the issue seems to be the depth of the fan. hence andy is removing that one piece of the plastic cage. i am just about ready to do the 05 so i will share some more pictures of the install.
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Old 08-17-2019, 01:28 AM   #24
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mount points on the radiator are the same (plastic rivet on driver side, torx screw on passenger side). the issue seems to be the depth of the fan. hence andy is removing that one piece of the plastic cage. i am just about ready to do the 05 so i will share some more pictures of the install.
x3 fan should not direct swap as mount point is difference than z4 and e46 but with a little modification we can use x3 fan with e46. note that motor is same except the shrould of the fan x3 is higher
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Old 08-17-2019, 06:44 AM   #25
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x3 fan should not direct swap as mount point is difference than z4 and e46 but with a little modification we can use x3 fan with e46. note that motor is same except the shrould of the fan x3 is higher
interesting.. what modification to the mount point? i just re-measured between the mount points and both are 20.5 inches?

bear in mind i am replacing the mechanical fan clutch on the inside of the radiator with the electrical fan from the x3 .. not the aux fan on the outside of the radiator.
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Old 08-17-2019, 07:02 AM   #26
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interesting.. what modification to the mount point? i just re-measured between the mount points and both are 20.5 inches?

bear in mind i am replacing the mechanical fan clutch on the inside of the radiator with the electrical fan from the x3 .. not the aux fan on the outside of the radiator.
just done mind see pic below show what the mount point is differnce in height instead of bolt on you need to drill new hold to mount it but it work fine to me

https://www.dropbox.com/s/0sy5mnrh7r...22315.jpg?dl=0

https://www.dropbox.com/s/hf42oaxzrj...32355.jpg?dl=0

https://www.dropbox.com/s/m1xe3tsn0z...60805.jpg?dl=0
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Old 08-17-2019, 07:26 AM   #27
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just done mind see pic below show what the mount point is differnce in height instead of bolt on you need to drill new hold to mount it but it work fine to me
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oh thank you. i see now. the width is the same but the height is different. so the bottom inserts on the e46 radiator will not suffice for the X3 fan. can you share a picture of your new drill hold/mount?
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Old 08-17-2019, 07:36 AM   #28
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oh thank you. i see now. the width is the same but the height is different. so the bottom inserts on the e46 radiator will not suffice for the X3 fan. can you share a picture of your new drill hold/mount?
note that the bottom of the fan fits very well to the radiator but only the top side need to drill the hole and I hold it with cable tile and the other side use pieces of metal to hold it with original screw
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Old 08-17-2019, 07:43 AM   #29
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note that the bottom of the fan fits very well to the radiator but only the top side need to drill the hole and I hold it with cable tile and the other side use pieces of metal to hold it with original screw
excellent, thanks, i was afraid of damaging the radiator. very good that someone has already done this.
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Old 08-17-2019, 09:32 AM   #30
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excellent, thanks, i was afraid of damaging the radiator. very good that someone has already done this.
next time I will find only Z4 fan should to swap but the fan itself able to use E65 / E83 / E85 as what I known
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Old 09-05-2019, 05:51 PM   #31
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https://drive.google.com/file/d/1Cac...BTPQDJx6u/view << BMW-North E46 Electric Fan Guide
Quote:
the fan does not immediately turn ON with an AC request ...

Chapter 4 - Testing the Fan & Module using INPA
Screen 1 - Select E46
Screen 2 - Select F6 - Activate (to get to the testing section)
Screen 3 - Select F3 System Test DK
Screen 4 - Select F3 E-Blower
Screen 5 - Graphical Representation
...
Observe fan speed changes. Allow 30 secs per speed ratio request to accommodate the hysteresis function.
i am testing my homemade adapter for the X3 fan. see the pics below. running the above steps from INPA, and it triggers the fan just fine at the different speeds (10%, 20%, etc). the multimeter says the fan is drawing about 4A at 10%.



but after 30 seconds the fan cuts off. is that normal behavior for INPA and/or the DME when the key is in position 2 and the engine is off?

Last edited by wfx32; 09-05-2019 at 05:53 PM.
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Old 09-05-2019, 05:54 PM   #32
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i am testing my homemade adapter for the X3 fan. see the pics below. running the above steps from INPA, and it triggers the fan just fine at the different speeds (10%, 20%, etc). the multimeter says the fan is drawing about 4A at 10%.



but after 30 seconds the fan cuts off. is that normal behavior for INPA and/or the DME when the key is in position 2 and the engine is off?
During the test, the fan does shut off after. a specified amount of time however I'm not sure if it's exactly 30 seconds
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Old 09-05-2019, 06:10 PM   #33
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During the test, the fan does shut off after. a specified amount of time however I'm not sure if it's exactly 30 seconds
thanks it must be that "hysteresis function" mentioned in the fan guide. i tested again with with the engine idling and AC running, and it doesn't cut off after 30s. multimeter says the fan is drawing about 16A.
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Old 09-06-2019, 08:26 AM   #34
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9) Optional: Extend wires for AUC (automatic recirculation) sensor to reach the mounting location on the Z4 fan. An extension adapter can be made using the following parts:
-Female socket housing (comes as wired adapter for xenon headlight vertical aim control): 61138373573
-Male socket housing (connects to AUC sensor): 61138365356
-Pins (0,2-0,5 MM˛) (need 4): 61130056961
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Z4 fan installed in E46:
Quote:
Originally Posted by itongx View Post
just done mind see pic below show what the mount point is differnce in height instead of bolt on you need to drill new hold to mount it but it work fine to me
where to re-mount this AUC (air recirculation sensor) 64116917001 ? from the above pictures it seems that andy325is extended the wires to mount the AUC on the driver side, whereas itongx mounted on the passenger side.

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So today I cleaned my AUC sensor, if you are not certain what this part is, it controls the automatic re-circulation function of your HVAC, you know, that little A with a circle. When the system detects pollutants or bad quality air, the vents close up so it doesnt enter the cabin.
and i guess i should clean this AUC before re-mounting.

Last edited by wfx32; 09-06-2019 at 08:27 AM.
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Old 09-06-2019, 12:24 PM   #35
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Originally Posted by wfx32 View Post
where to re-mount this AUC (air recirculation sensor) 64116917001 ? from the above pictures it seems that andy325is extended the wires to mount the AUC on the driver side, whereas itongx mounted on the passenger side.



and i guess i should clean this AUC before re-mounting.
I temporaly mount it with double sided tape during I'm waiting for new fan shroud
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Old 09-14-2019, 07:36 AM   #36
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this is so cool man! thank you for this info defenitely doing this to mines!
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Old 09-14-2019, 08:30 AM   #37
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Just curious did you pay 650 far the 600w z4? i cant find it cheaper unless I buy it used.
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Old 09-14-2019, 08:33 AM   #38
wfx32
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Just curious did you pay 650 far the 600w z4? i cant find it cheaper unless I buy it used.
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looking for a lightly used one of these 600w cooling fans .. 17113415181/17113442089 from the X3 or 17427542912/17427514104 from the Z4
you have just found the issue with this. the new fans are insanely overpriced. a bit of a risk but i would suggest ebay or car-part.com to find the used fan. but be very careful. lots of folks out there trying to sell 400W as 600W. check the number of blades and make sure you get some warranty.
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Old 09-14-2019, 06:02 PM   #39
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I paid about $600 for a new one a while back and $225 for a used one. There are photos of both in the first post. I can understand the price may cause some people to not be interested in this fan upgrade, but it's well worth it in my opinion. It's a very small expense compared to the cost of proper BMW maintenence.
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Old Today, 03:02 AM   #40
wfx32
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yes better to go with the Z4 fan. X3 fan fits perfectly in the bottom but too tall at the top. i fixed with zip ties for the time being, but i'll need to come up with a solution for the air intake.

the 600w fan is very powerful. it will make a difference to the cooling system for sure. and maybe some engine performance by losing the parasitic drag of the clutch fan. i'll need to take off the bumper and remove the aux fan at some point also.


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