Cooling Fan Problem...
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Joined: Apr 2007
Posts: 94
Likes: 2
Cooling Fan Problem...
Today, I got caught in downtown traffic (Chicago) while coming home from class and my coolant went over 250 degrees! ( I have never seen it over 230 degrees) All of the warning indicators/lights came on but they quickly went away as the road opened up. By the time I got home the coolant was down to 196 degrees but I noticed my primary fan is not working. I have a manual fan switch that also programs the fans to come on at 203 degrees but it does not turn on the primary fan and either does the A/C. I made sure the fan is plugged in and spins freely. What could it be?
***
While trying to diagnose the problem I made it worse. Now none of the fans come on no matter what I do, my SERVICE ASR light is on, and when I put my parking lights on my headlights flip open! Is there a fuse that I could have blown or any other ideas?
Where are the cooling fan fuses located? I have the shop manual but I can not find a fuse panel diagram showing what each fuse is linked to.
Thanks
***
While trying to diagnose the problem I made it worse. Now none of the fans come on no matter what I do, my SERVICE ASR light is on, and when I put my parking lights on my headlights flip open! Is there a fuse that I could have blown or any other ideas?
Where are the cooling fan fuses located? I have the shop manual but I can not find a fuse panel diagram showing what each fuse is linked to.
Thanks
Last edited by DanielC4; Jul 19, 2009 at 11:37 AM.
CF JASOC Member
Joined: Feb 2006
Posts: 8,040
Likes: 34
From: Downtown Annapolis, MD. The Future is where we all have to live. Let's not screw it up.
St. Jude Donor '08-'09-'10-'11
Fuse panel is on the end of the dash when you open the passenger side door.
Do the fans come on when you turn on the A/C?
Do the fans come on when you turn on the A/C?
Melting Slicks
Joined: Feb 2008
Posts: 3,286
Likes: 6
From: Palm Beach
The year of the car is always a great help. The fan configuration changed over the years.
Post the schematic and we will help.
Post the schematic and we will help.
Today, I got caught in downtown traffic (Chicago) while coming home from class and my coolant went over 250 degrees! ( I have never seen it over 230 degrees) All of the warning indicators/lights came on but they quickly went away as the road opened up. By the time I got home the coolant was down to 196 degrees but I noticed my primary fan is not working. I have a manual fan switch that also programs the fans to come on at 203 degrees but it does not turn on the primary fan and either does the A/C. I made sure the fan is plugged in and spins freely. What could it be?
***
While trying to diagnose the problem I made it worse. Now none of the fans come on no matter what I do, my SERVICE ASR light is on, and when I put my parking lights on my headlights flip open! Is there a fuse that I could have blown or any other ideas?
Where are the cooling fan fuses located? I have the shop manual but I can not find a fuse panel diagram showing what each fuse is linked to.
Thanks
***
While trying to diagnose the problem I made it worse. Now none of the fans come on no matter what I do, my SERVICE ASR light is on, and when I put my parking lights on my headlights flip open! Is there a fuse that I could have blown or any other ideas?
Where are the cooling fan fuses located? I have the shop manual but I can not find a fuse panel diagram showing what each fuse is linked to.
Thanks
Thread Starter
Advanced
Joined: Apr 2007
Posts: 94
Likes: 2
1992, and no fans even with A/C. The secondary fan did work until yesterday but I tried to jump power to the primary fan and now both fans do not work. And I know where the fuse panel is but I am not sure which fuse is for the cooling fans. There has to be a diagram of the fuse box in the shop manual but I can not find it.
Pro
Joined: Jun 2009
Posts: 628
Likes: 0
From: OR
1992, and no fans even with A/C. The secondary fan did work until yesterday but I tried to jump power to the primary fan and now both fans do not work. And I know where the fuse panel is but I am not sure which fuse is for the cooling fans. There has to be a diagram of the fuse box in the shop manual but I can not find it.
Team Owner
Joined: Mar 2001
Posts: 54,124
Likes: 30
From: Cincinnati, Oh USA
You can ground the green/white wire on the fan relay to turn on the fan relay/s which supply 12v to the fan motors. You should be able to hear the relays click. Fans won't run unless the ign is in run. Unplug the fan/s and jump 12v to the fan motors, they should run. These motors have brushes and the brushes don't last forever. Also, one fan motor wire goes to ground and sometimes the screw grounding one fan motor wire gets rusted and doesn't make connection to ground. Check out the ground connection too.
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Pro
Joined: Dec 2000
Posts: 534
Likes: 32
From: Farmington NY
Depending on which motor you replace be sure the fan fits. I have an 85 and when I replace a bad motor, I also had to replace the blade because the old blade didn't fit the new motor!! Anyone interested, I've an 85 blade just hanging around!
