Welcome to Xdrivers
Please login or register.

Author Topic: Auxilary fan Pusher Fan ?64546921381 Auxilary fan X5 e53 3.0i  (Read 807 times)

0 Members and 1 Guest are viewing this topic.

March 31, 2018, 10:09:58 PM
Reply #15

marti

  • Newbie
  • *
  • Posts: 32
  • Country: gb
    • View Profile
Re: Auxilary fan Pusher Fan ?64546921381 Auxilary fan X5 e53 3.0i
« Reply #15 on: March 31, 2018, 10:09:58 PM »
Does the AC fan spin freely?

March 31, 2018, 10:17:05 PM
Reply #16

hawkar

  • Newbie
  • *
  • Posts: 14
  • Country: gb
    • View Profile
Re: Auxilary fan Pusher Fan ?64546921381 Auxilary fan X5 e53 3.0i
« Reply #16 on: March 31, 2018, 10:17:05 PM »
if you mean freely by when i spinn it by hand then yes

April 01, 2018, 08:39:45 AM
Reply #17

X5Sport

  • Lifer
  • *****
  • Posts: 15482
  • Country: england
  • Location: Planet X6......
  • Gender: Male
  • Über Geek in Chief
    • View Profile
Re: Auxilary fan Pusher Fan ?64546921381 Auxilary fan X5 e53 3.0i
« Reply #17 on: April 01, 2018, 08:39:45 AM »
The ac pusher fan uses PWM (Pulse width modulation) to drive it and a DC supply does nothing.  The PWM changes the speed and that comes from the ac controller.  Same system that computers use for their fans, but at 600W or more it will kill your PC!
:type:

April 01, 2018, 09:16:40 AM
Reply #18

hawkar

  • Newbie
  • *
  • Posts: 14
  • Country: gb
    • View Profile
Re: Auxilary fan Pusher Fan ?64546921381 Auxilary fan X5 e53 3.0i
« Reply #18 on: April 01, 2018, 09:16:40 AM »
so there is no way to make sure it is the fan and not the Switch  or PWM?
I think i will get these 2 parts and will see
(i don't really have much knowlegde so please excuse my lack of understanding)

April 01, 2018, 12:10:52 PM
Reply #19

X5-D-Sport Salisbury

  • Member
  • *****
  • Posts: 1148
  • Country: gb
  • Gender: Male
    • View Profile
Re: Auxilary fan Pusher Fan ?64546921381 Auxilary fan X5 e53 3.0i
« Reply #19 on: April 01, 2018, 12:10:52 PM »
NO, the AC fan is a balls-ache of a device.... I been trying to find out if mine works or some sensors knackered etc... it's already got 12 volts to it anyway. It needs a coded signal to fire it up.

Bloody nuisance, as this AC fan needs a digital signal to enable it to power up.... & nothing I can do to generate this signal to tell it to work - sodding thing.
I only have AC if the vehicle is rolling to get air thru the AC rad & inter-cooler.

I have wondered about ripping my AC fan out, & replacing it with a standard auxiliary 12v cooling fan unit from E-bay for £30 & simply having a switch on the dash to operate.

April 01, 2018, 04:39:36 PM
Reply #20

hawkar

  • Newbie
  • *
  • Posts: 14
  • Country: gb
    • View Profile
Re: Auxilary fan Pusher Fan ?64546921381 Auxilary fan X5 e53 3.0i
« Reply #20 on: April 01, 2018, 04:39:36 PM »
that's a shame!
please let me know how it goes if you change it until then i will try to unravel  the mystery.
Please guys feel free to help me O:-)

April 01, 2018, 05:39:08 PM
Reply #21

X5-D-Sport Salisbury

  • Member
  • *****
  • Posts: 1148
  • Country: gb
  • Gender: Male
    • View Profile
Re: Auxilary fan Pusher Fan ?64546921381 Auxilary fan X5 e53 3.0i
« Reply #21 on: April 01, 2018, 05:39:08 PM »
Because I am a sad git, I have full machining facilities at home, so had ideas of getting a duplicate X5 AC fan only, machining a boss to mount it to another universal 12 volt fan motor & bolting the whole lot back in place.....
I recon about 3 hrs fooling around at the Lathe & a bit of tinkering should sort it.

I have found a way to remove the AC fan & motor without having to remove half the car, the engine, tail lights, the bloody seats etc, just to get at the fan bolts....

Will keep you posted.

April 01, 2018, 08:06:13 PM
Reply #22

henrym3

  • Member
  • ****
  • Posts: 883
  • Country: gb
  • Location: High Seaton Workington
  • Gender: Male
    • View Profile
Re: Auxilary fan Pusher Fan ?64546921381 Auxilary fan X5 e53 3.0i
« Reply #22 on: April 01, 2018, 08:06:13 PM »
I know sod all about PWM fans and how they receive their information and process it to drive the fan so I bought one from the scrappy £22, Can't remember which BMW I ripped it out of and ripped the guts out of the box which is to the side of the actual fan motor, joined the inlet and outlet wires together put 12v to it and it runs. Cut the top coolant hose and inserted a temperature sensor to switch the fan on ( I think from memory it's at 93 degrees ) This is how I got rid of my viscous fan but there is no reason it couldn't be used for a/c fan. I always bear in mind that one mans mod is another mans nightmare.
E53 X5 4.6is, Carbon Black, LPG, Paddle Shift, Dynavin N6, Lowered, 22"Wheels, Side Bars. Perfusion Exhaust
E30 M3 Black, S50B32 Engine, 6 Speed Box, Ireland Engineering ARBs & Big Brake Conversion, Lowered, 18"LMs, CF CAI, CF Splitter & Barge Board, ZM3 Quad Exhaust.
VW R32 Gone

April 02, 2018, 02:04:49 PM
Reply #23

X5-D-Sport Salisbury

  • Member
  • *****
  • Posts: 1148
  • Country: gb
  • Gender: Male
    • View Profile
Re: Auxilary fan Pusher Fan ?64546921381 Auxilary fan X5 e53 3.0i
« Reply #23 on: April 02, 2018, 02:04:49 PM »
hello again Henry,

I will get hold of another AC fan motor unit & see if its possible to bypass the PWM circuitry & create a stand alone power feed of some sort.... gotta be worth a go me thinks.
Summer is coming & I don't want to get boiled alive in any more West-Midlands traffic jams.

By all means PM me Henry, & we can share notes on this one & I will post findings & hopefully answers to our brethren.

I gotta get another fan motor off ebay to fool about with, unless some one has one spare ?

Cheers
Grant B

April 16, 2018, 08:53:02 PM
Reply #24

hawkar

  • Newbie
  • *
  • Posts: 14
  • Country: gb
    • View Profile
Re: Auxilary fan Pusher Fan ?64546921381 Auxilary fan X5 e53 3.0i
« Reply #24 on: April 16, 2018, 08:53:02 PM »
Hi

Just want to say that I have replaced the viscous fan and that the temperature doesn't go up like it did before by turning on the aircondition :xmasgrin: (you guys were right the viscous fan was not working and cooling at all)
i hope it will stay like that even on warmer days.

So i will update after replacing the Pusher Fan too

and thanks again