Cooling fan - SaabCentral Forums
*
Home Saab Pictures Saab Classifieds Saab Dealer Listings Saab Forum Saab Forum


Go Back   SaabCentral Forums > Saab NG900, 1994-1998 and OG9-3, 1999-2002 & '03 Convertible (NG=new gen/OG=old gen) > NG900 & OG9-3 Workshop

NG900 & OG9-3 Workshop NG900 (1994 to 1998) & OG9-3 (1999-2002) & '03 Convertible Technical Forum

SaabCentral.com is the premier Saab Forum on the internet. Registered Users do not see the above ads.
Reply
 
Thread Tools Display Modes
  #1  
Old 3rd June 2009
jbroski jbroski is offline
New Member
 
Join Date: Jun 2009                                                
Location: tx
My Saabs: saab 900
Posts: 3
Default Cooling fan

Hey guys, long time lurker, 1st time poster here. Today my cooling fan decided to quit working. rather than going through the trouble of replacing the resistor & all that, can I just use a universal 12" or 14" electric fan? Any help would be greatly appreciated.
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2  
Old 3rd June 2009
earthworm's Avatar
earthworm earthworm is offline
Saab Sage!
 
Join Date: Jun 2003                                                
Location: Goldsboro, PA
My Saabs: '96 900S, Automatic with 148K miles, blu
Posts: 21,210
Default

Years ago, I installed a 99 fan on the 93, but I had plenty of room and the controls were simple.Today, this is no longer true. To repair the resistor seems to be much easier and doable..

http://www.geocities.com/pmiczek@sbc...es.html?200727
Thanks to PMI of Wisconsin
Welcome to SaabCentral, JBroski of Texas.
__________________
The earthworm
'96 900S, Automatic
Those who think in the past will have no future.
173K miles in the good ole USA
Reply With Quote Quick reply to this message
  #3  
Old 3rd June 2009
jbroski jbroski is offline
New Member
 
Join Date: Jun 2009                                                
Location: tx
My Saabs: saab 900
Posts: 3
Default

I was actually just looking at that site, but can't find a resistor with those specs anywhere. Radio Shack doesn't have one, neither does Fry's I need to get the fan fixed asap, as this is my daily driver.
Reply With Quote Quick reply to this message
  #4  
Old 3rd June 2009
earthworm's Avatar
earthworm earthworm is offline
Saab Sage!
 
Join Date: Jun 2003                                                
Location: Goldsboro, PA
My Saabs: '96 900S, Automatic with 148K miles, blu
Posts: 21,210
Default

Quote:
Originally Posted by jbroski View Post
I was actually just looking at that site, but can't find a resistor with those specs anywhere. Radio Shack doesn't have one, neither does Fry's I need to get the fan fixed asap, as this is my daily driver.
I am not generally impressed with Radio Shack...
Why no, buy a heat sink pad from them, which they probably do not carry ..a make your own set up using several resistors in series ??
Or visit your local yard.
The Saab design could be better, much better.The resistor should be on a heat sink and the wire insulation could be better...
The 9-3 uses a different set-up, and I doubt if it would fit.....
__________________
The earthworm
'96 900S, Automatic
Those who think in the past will have no future.
173K miles in the good ole USA
Reply With Quote Quick reply to this message
  #5  
Old 3rd June 2009
jstrowe jstrowe is offline
Saab Lunatic
 
Join Date: Oct 2007                                                
Location: New Jersey, USA
My Saabs: 1995 ng900 2.0 'vert, 2000 9-5 2.3T
Posts: 1,237
Default

You can get them from Digikey. They offer next day delivery if you call them by 8:00 PM. The resistor itself is $5.47 plus shipping.

http://search.digikey.com/scripts/Dk...e=TMC50-.20-ND

John
Reply With Quote Quick reply to this message
  #6  
Old 3rd June 2009
jbroski jbroski is offline
New Member
 
Join Date: Jun 2009                                                
Location: tx
My Saabs: saab 900
Posts: 3
Default

Hey, thanks for the link Got the resistor ordered.
Yeah, Radio Shack is pretty worthless. The first guy I spoke with there acted like he didn't know what a resistor was lol
Reply With Quote Quick reply to this message
  #7  
Old 16th July 2009
Wing0tj Wing0tj is offline
Junior Member
 
Join Date: Jun 2009                                                
Location: Orange County, CA
My Saabs: 97 900s
Posts: 24
Default Resistor replacement wiring

I am thinking I have the same exact problem with my AC, at first I thought it was in need a charge, so I hooked up the gauge and I noticed the fan was cycling on and off instead of running constantly (I'm in phoenix and it was 113 today so it I would assume it would just run constantly).

I am pretty sure that the resistor is fried.

SO my question is, does anyone know of a wire diagram for the setup found here
http://www.geocities.com/pmiczek@sbc...n/fan_res.html?

I am pretty confident I understand what is shown here, but I am a little weary of what exactly is going on with the white/gray wires.

Is there a 3-way splice hidden underneath the black shrink wrap on the new setup?

Thanks Taylor
Reply With Quote Quick reply to this message
  #8  
Old 27th July 2009
ldinnc ldinnc is offline
Junior Member
 
Join Date: Dec 2008                                                
Location: Charlotte, NC USA
My Saabs: 96 900S
Posts: 28
Default

I don't believe there is any splice under the shrink wrap of the new setup but rather I believe there are two white wires joined at the yellow crimp connector. Power either flows through the white wire directly to the fan motor for high speed operation or through the green wire, through the resistor, up the white wire to the crimp connector then down the other white wire to the fan motor for low speed operation.
Reply With Quote Quick reply to this message
  #9  
Old 28th August 2009
Saab Max's Avatar
Saab Max Saab Max is offline
Saab Crazy
 
Join Date: Mar 2008                                                
Location: NY
My Saabs: SAAB 900SE V6 2.5L / 9³SE 2.0/03 9-5Areo
Posts: 719
Question

Hello guys im just curious.....
My cooling fan runs on high when it comes on ..... never low im guessing or i never see it running low speed before.... how do i know if the resistor needs changing......? Or is this normal for it to act like this?
Reply With Quote Quick reply to this message
  #10  
Old 28th August 2009
earthworm's Avatar
earthworm earthworm is offline
Saab Sage!
 
Join Date: Jun 2003                                                
Location: Goldsboro, PA
My Saabs: '96 900S, Automatic with 148K miles, blu
Posts: 21,210
Default

I hope I am 100%correct about this. The fan high speed bypasses the resistor( I am positive). The ECU with input from sensors, controls the speed.
There is excessive heat, particularly with the turbocharger and this could be damaging things.
I'd remove the fan and resistors and do a close examination.
Normally the fan should run on low and then switch to high when necessary.
__________________
The earthworm
'96 900S, Automatic
Those who think in the past will have no future.
173K miles in the good ole USA
Reply With Quote Quick reply to this message
  #11  
Old 28th August 2009
Saab Max's Avatar
Saab Max Saab Max is offline
Saab Crazy
 
Join Date: Mar 2008                                                
Location: NY
My Saabs: SAAB 900SE V6 2.5L / 9³SE 2.0/03 9-5Areo
Posts: 719
Default

Quote:
Originally Posted by earthworm View Post
I hope I am 100%correct about this. The fan high speed bypasses the resistor( I am positive). The ECU with input from sensors, controls the speed.
There is excessive heat, particularly with the turbocharger and this could be damaging things.
I'd remove the fan and resistors and do a close examination.
Normally the fan should run on low and then switch to high when necessary.
Thanks alot EW..... Im guessing my fan resistor is bad then, because it only goes on high then turn off when necessary.......
Reply With Quote Quick reply to this message
  #12  
Old 28th August 2009
earthworm's Avatar
earthworm earthworm is offline
Saab Sage!
 
Join Date: Jun 2003                                                
Location: Goldsboro, PA
My Saabs: '96 900S, Automatic with 148K miles, blu
Posts: 21,210
Default

Possibly, its easy enough to check out...great tool, the VOM.
__________________
The earthworm
'96 900S, Automatic
Those who think in the past will have no future.
173K miles in the good ole USA
Reply With Quote Quick reply to this message
  #13  
Old 31st August 2009
Saab Max's Avatar
Saab Max Saab Max is offline
Saab Crazy
 
Join Date: Mar 2008                                                
Location: NY
My Saabs: SAAB 900SE V6 2.5L / 9³SE 2.0/03 9-5Areo
Posts: 719
Default

Quote:
Originally Posted by earthworm View Post
Possibly, its easy enough to check out...great tool, the VOM.
Its me again.... i was thinking earlier and was wondering..... Does the LOW speed runs only when the A/C is [ON]......... or it constanly runs with/without the A/C ? .... THEN runs HIGH when necessay (Meaning the temp when up a few degrees) Thanks

Last edited by Saab Max; 31st August 2009 at 07:34 PM.
Reply With Quote Quick reply to this message
  #14  
Old 31st August 2009
jstrowe jstrowe is offline
Saab Lunatic
 
Join Date: Oct 2007                                                
Location: New Jersey, USA
My Saabs: 1995 ng900 2.0 'vert, 2000 9-5 2.3T
Posts: 1,237
Default

Quote:
Originally Posted by Saab Max View Post
Its me again.... i was think earlier and was wondering..... Does the LOW speed runs only when the A/C is [ON]......... or it constanly runs with/without the A/C ? .... THEN runs HIGH when necessay (Meaning the temp when up a few degrees) Thanks
When the engine heats up, the fan first comes on at low speed. If low speed is not sufficient and the temperature keeps going up, the high speed fan comes on. After the engine is shut down and the water stops flowing, the temperature often goes up and the low speed fan kicks on for a few seconds. When the A/C is turned on, the pressure in the condenser goes up. The condenser pressure is related to its temperature with higher temperatures causing higher pressures. If the condenser temperature/pressure goes up past a certain point, the low speed fan (and only the low speed fan) comes on to cool the condenser. The fan need not run continuously with the A/C on, but it will run most of the time.

John
Reply With Quote Quick reply to this message
  #15  
Old 31st August 2009
Saab Max's Avatar
Saab Max Saab Max is offline
Saab Crazy
 
Join Date: Mar 2008                                                
Location: NY
My Saabs: SAAB 900SE V6 2.5L / 9³SE 2.0/03 9-5Areo
Posts: 719
Default

Quote:
Originally Posted by jstrowe View Post
When the engine heats up, the fan first comes on at low speed. If low speed is not sufficient and the temperature keeps going up, the high speed fan comes on. After the engine is shut down and the water stops flowing, the temperature often goes up and the low speed fan kicks on for a few seconds. When the A/C is turned on, the pressure in the condenser goes up. The condenser pressure is related to its temperature with higher temperatures causing higher pressures. If the condenser temperature/pressure goes up past a certain point, the low speed fan (and only the low speed fan) comes on to cool the condenser. The fan need not run continuously with the A/C on, but it will run most of the time.

John
Thanks alot John
Reply With Quote Quick reply to this message
  #16  
Old 2nd September 2009
Saab Max's Avatar
Saab Max Saab Max is offline
Saab Crazy
 
Join Date: Mar 2008                                                
Location: NY
My Saabs: SAAB 900SE V6 2.5L / 9³SE 2.0/03 9-5Areo
Posts: 719
Question

Im getting ready to attempt this job.... got the resistor but where can i get the other parts such as :

White & Black wire, 12 AWG, automotive
Green wire, 14 AWG, automotive
M6 screws and nuts (2)
14 AWG crimp connectors (6)
Heat shrink tubing
Aluminum plate, 30 x 100 mm (~1.25 x 4")
Reply With Quote Quick reply to this message
  #17  
Old 2nd September 2009
jstrowe jstrowe is offline
Saab Lunatic
 
Join Date: Oct 2007                                                
Location: New Jersey, USA
My Saabs: 1995 ng900 2.0 'vert, 2000 9-5 2.3T
Posts: 1,237
Default

Quote:
Originally Posted by Saab Max View Post
Im getting ready to attempt this job.... got the resistor but where can i get the other parts such as :

White & Black wire, 12 AWG, automotive
Green wire, 14 AWG, automotive
M6 screws and nuts (2)
14 AWG crimp connectors (6)
Heat shrink tubing
Aluminum plate, 30 x 100 mm (~1.25 x 4")
It's in the description of the first two parts: an automotive supply store. They should have everything with the possible exception of the aluminum plate. You might have to try a hardware store to find something that will work.

John
Reply With Quote Quick reply to this message
  #18  
Old 3rd September 2009
900chango 900chango is offline
Senior Member
 
Join Date: Apr 2007                                                
Location: chicago
My Saabs: 1996 900 se Turbo, 1999 9³ se
Posts: 182
Default

I did this job one year ago. I got my resistor from www.mouser.com.
I followed PMI's guide but ran into some issues about where some of the wires went...this is my thread:
http://www.saabcentral.com/forums/sh...d.php?t=130544

I have not had any problems, but I'm still not sure if my LOW speed works since my AC doesn't blow cold since I bought the car 2 years ago.

For the low price of all these materials this job is worth doing rather than buying an aftermarket fan.
__________________
1996 Black Turbo 900 A/T... 180,000 mi.
Left stranded: 2
Smiles from boosting : 1000's and counting
Reply With Quote Quick reply to this message
  #19  
Old 3rd September 2009
Saab Max's Avatar
Saab Max Saab Max is offline
Saab Crazy
 
Join Date: Mar 2008                                                
Location: NY
My Saabs: SAAB 900SE V6 2.5L / 9³SE 2.0/03 9-5Areo
Posts: 719
Default

Quote:
Originally Posted by 900chango View Post
I did this job one year ago. I got my resistor from www.mouser.com.
I followed PMI's guide but ran into some issues about where some of the wires went...this is my thread:
http://www.saabcentral.com/forums/sh...d.php?t=130544

I have not had any problems, but I'm still not sure if my LOW speed works since my AC doesn't blow cold since I bought the car 2 years ago.

For the low price of all these materials this job is worth doing rather than buying an aftermarket fan.
Can you send the direct link from mouser.com... its a pain to find the exact resistor on there site.... i bought mines from digikey.com... thanks alot
Reply With Quote Quick reply to this message
  #20  
Old 8th September 2009
900chango 900chango is offline
Senior Member
 
Join Date: Apr 2007                                                
Location: chicago
My Saabs: 1996 900 se Turbo, 1999 9³ se
Posts: 182
Default link to power resistor

http://www.mouser.com/Passive-Compon...+RH-50&FS=True
__________________
1996 Black Turbo 900 A/T... 180,000 mi.
Left stranded: 2
Smiles from boosting : 1000's and counting
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Reply

Bookmarks

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the SaabCentral Forums forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
If you do not want to register, fill this field only and the name will be used as user name for your post.
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools
Display Modes

Posting Rules
You may post new threads
You may 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

Forum Jump


All times are GMT -4. The time now is 03:03 AM.



Powered by vBulletin® Copyright ©2000 - 2014, vBulletin Solutions, Inc.

top of page | sitemap | email us



copyright © 2003 - 2011 saabcentral.com, All rights reserved http://www.whiter.co.uk - valid xhtml - valid css
SaabCentral is an independently run website and is not affiliated in any way to Saab Automobile AB.


Garage Plus vBulletin Plugins by Drive Thru Online, Inc.