Home Forums Articles How To's FAQ Register
Go Back   Xoutpost.com > BMW SAV Forums > X5 (E53) Forum
Fluid Motor Union
User Name
Password
Member List Premier Membership Search Today's Posts Mark Forums Read

Xoutpost server transfer and maintenance is occurring....
Xoutpost is currently undergoing a planned server migration.... stay tuned for new developments.... sincerely, the management


Reply
 
LinkBack Thread Tools Display Modes
  #51  
Old 07-09-2021, 09:52 PM
Overboost's Avatar
//Binary is in my DNA
 
Join Date: Apr 2006
Location: Huntersville, NC
Posts: 3,162
Overboost is on a distinguished road
Pin 85 is ground and pin 86 is the 12V trigger on all the relays I work with. Not sure where you got that pin out?
Reply With Quote

Sponsored Links

  #52  
Old 07-09-2021, 10:12 PM
workingonit's Avatar
Member
 
Join Date: May 2021
Location: DFW Texas
Posts: 121
workingonit is on a distinguished road
standard 4-pin Bosch-type relay

It's shown that way in the attachment, and here's another with the same. 30 is main source of power (high amperage input, battery), 85 is the trigger (lower amperage input, switched power), 86 is ground (for the relay itself), and 87 is the high amperage output (to power the high draw accessory). That's the way it's been my whole adult life, used in workplace and automotive projects I've done!
Attached Images
 
__________________
2001 BMW X5 - E53 w/3.0i M54,
topas-blau, Leder-Montana grau
(Born on 2001-07-13, Friday the 13th)
Reply With Quote
  #53  
Old 07-09-2021, 10:22 PM
Overboost's Avatar
//Binary is in my DNA
 
Join Date: Apr 2006
Location: Huntersville, NC
Posts: 3,162
Overboost is on a distinguished road
Pin 85 and 86 just charge the coil so I guess you can hit it either way. I have always followed the German logic of 85 being ground.

Reply With Quote
  #54  
Old 07-09-2021, 10:35 PM
workingonit's Avatar
Member
 
Join Date: May 2021
Location: DFW Texas
Posts: 121
workingonit is on a distinguished road
Like they used to say around here, "same difference"; mox nix!
__________________
2001 BMW X5 - E53 w/3.0i M54,
topas-blau, Leder-Montana grau
(Born on 2001-07-13, Friday the 13th)
Reply With Quote
  #55  
Old 07-10-2021, 12:16 PM
bcredliner's Avatar
Premier Member
 
Join Date: Jun 2008
Location: Little Elm,Texas. (40 minutes North of Dallas)
Posts: 7,588
bcredliner is on a distinguished road
The fan thermostat is the control source. I have an inline fuse for fan draw. Power source is charging post. Has been wired that way for several years, no issues other than controller stopped working so had to replace it. I don't see a controller in the parts pictures. The one I have is a dial that I can turn for hotter or cooler fan start. There should be a how to that I did way back when.
__________________
X5 4.6 2002 Black Sap, Black interior. 2013 X5M Melbourne Red, Bamboo interior
Dallas
Reply With Quote
  #56  
Old 07-10-2021, 12:58 PM
workingonit's Avatar
Member
 
Join Date: May 2021
Location: DFW Texas
Posts: 121
workingonit is on a distinguished road
pre-set thermo switch is the controller (w/un-switched power)

Quote:
Originally Posted by bcredliner View Post
The fan thermostat is the control source. I have an inline fuse for fan draw. Power source is charging post. Has been wired that way for several years, no issues other than controller stopped working so had to replace it. I don't see a controller in the parts pictures. The one I have is a dial that I can turn for hotter or cooler fan start. There should be a how to that I did way back when.
The Derale 16738 fan controller (in the picture previously shown) uses the thermostatic probe/sensor/switch (semantics!) as the only on/off control if non-switched power is used to trigger the relay. It is pre-set to turn on at 180F degrees and off at 165F degrees. Non-adjustable.

I want a little more control over the system; using
  • 1) a switched power/trigger, and
  • 2) a manual override switch,
Why?
  • a) to regulate when and for how long the thermostatic switch is active,
  • b) to not let the system run wild and drain the battery, and also
  • c) to delay the fan coming on if quicker heat is needed on a very cold day (not really a problem though in Texas, usually).

There's a warning note in the kit's instructions about possibly draining the battery; it's my primary reason for finding an underhood switched power source.
Attached Images
 
__________________
2001 BMW X5 - E53 w/3.0i M54,
topas-blau, Leder-Montana grau
(Born on 2001-07-13, Friday the 13th)
Reply With Quote
  #57  
Old 07-10-2021, 02:14 PM
bcredliner's Avatar
Premier Member
 
Join Date: Jun 2008
Location: Little Elm,Texas. (40 minutes North of Dallas)
Posts: 7,588
bcredliner is on a distinguished road
The fan I have doesn't run that long after I shut it off. Two or three bursts of about 30 seconds or so and it doesn't come on again. No problem with my battery. I'm getting 5-7 years out of batteries. Not suggesting you should wire it the way I have just some input and encouragement from someone that has had an electric fan for several years without any problems. They're great.

Why does it shut off at 165F?
__________________
X5 4.6 2002 Black Sap, Black interior. 2013 X5M Melbourne Red, Bamboo interior
Dallas
Reply With Quote
  #58  
Old 07-10-2021, 02:14 PM
Member
 
Join Date: Nov 2014
Location: SF Bay Area
Posts: 1,301
oldskewel is on a distinguished road
Makes sense on the manual override. That's what I'd want too. On / auto / off

I also would be concerned with battery drain after the car is off. Here's an idea for that ...

Most circuits in the car are switched off after 16 minutes when the car goes to sleep (I think key out and doors all closed triggers that). So if you found one of those circuits and ran a wire from the fuse box through the firewall into the engine bay, and used it to turn a relay on, to unswitched engine bay power, that would give you an extra safety against running down the battery. Of course it would make sense to design this and your on/auto/off control together.

If for some reason the controller or sensor malfunctioned or you parked on top of a volcano, even if the fan would want to stay on, the sleep mode would turn it off after 16 minutes.
__________________
2001 X5 3.0i, 190k miles, AT, owned since 2014
Reply With Quote
  #59  
Old 07-10-2021, 02:30 PM
workingonit's Avatar
Member
 
Join Date: May 2021
Location: DFW Texas
Posts: 121
workingonit is on a distinguished road
Quote:
Originally Posted by oldskewel View Post
...I also would be concerned with battery drain after the car is off. Here's an idea for that ...

Most circuits in the car are switched off after 16 minutes when the car goes to sleep (I think key out and doors all closed triggers that). So if you found one of those circuits and ran a wire from the fuse box through the firewall into the engine bay, and used it to turn a relay on, to unswitched engine bay power, that would give you an extra safety against running down the battery. Of course it would make sense to design this and your on/auto/off control together.

If for some reason the controller or sensor malfunctioned or you parked on top of a volcano, even if the fan would want to stay on, the sleep mode would turn it off after 16 minutes.
Quote:
Originally Posted by workingonit
The optional override switch(also 85), will be tied to the cigarette lighter (which powers off, "sleeps", after 16 minutes, so if I choose to, I'll switch it on to let the fan run 16 minutes after the engine's off.
I was going to use sleep mode to be sure that my on-off manual override turned off if I forgot to, or intentionally left it on for post-drive cooling. I'm still looking for an underhood switched source.
__________________
2001 BMW X5 - E53 w/3.0i M54,
topas-blau, Leder-Montana grau
(Born on 2001-07-13, Friday the 13th)
Reply With Quote
  #60  
Old 07-13-2021, 11:19 AM
workingonit's Avatar
Member
 
Join Date: May 2021
Location: DFW Texas
Posts: 121
workingonit is on a distinguished road
mounted fan to fan shroud

I received my 16" Flex-A-Lite 238 fan late yesterday afternoon, and started to install it. The original mechanical fan came off easy; I didn't even use the tools bought specifically for fan removal, just a tap on the 1 1/4" wrench did the trick. I tried to use the push-thru plastic rods that came with it, to fasten the fan to the radiator, but they were too large in diameter to push thru.

I found another set I had bought before, smaller in diameter; they would fit in between the fins OK, but there was no room to put the locking piece on the other side, since there's only about 3/4" space between the radiator and A/C condenser. So, I went to Home Depot to buy two 36" long 1"x1/8" aluminum flat bars, to make a frame to mount the fan on the shroud.

I used my Wen (Dremel substitute) to make slots in four spots in the shroud, placed just-so that the fan an bars will not contact the radiator fins, but remain about 1/8" shy of touching. The shroud can slip back into its' original position, with the fan centered in the shroud opening. I'll do that today, while I'm running wires thru the firewall (if the part comes in the mail).
Attached Images
 
__________________
2001 BMW X5 - E53 w/3.0i M54,
topas-blau, Leder-Montana grau
(Born on 2001-07-13, Friday the 13th)
Reply With Quote
Reply

Bookmarks

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 Off
Trackbacks are On
Pingbacks are On
Refbacks are On





All times are GMT -4. The time now is 07:26 AM.
vBulletin, Copyright 2021, Jelsoft Enterprises Ltd. SEO by vBSEO 3.6.0
2017 Xoutpost.com. All rights reserved. Xoutpost.com is a private enthusiast site not associated with BMW AG.
The BMW name, marks, M stripe logo, and Roundel logo as well as X3, X5 and X6 designations used in the pages of this Web Site are the property of BMW AG.
This web site is not sponsored or affiliated in any way with BMW AG or any of its subsidiaries.