Discovery II Talk about the Land Rover Discovery II within.
Sponsored by:
Sponsored by:

AC Fan doesn’t blow - What am I missing?!

Old Dec 4, 2023 | 07:12 AM
  #11  
Extinct's Avatar
Baja
Joined: Feb 2013
Posts: 5,269
Likes: 1,809
From: Lynchburg VA
Default

Originally Posted by Roverwhelmed
Yes, I have 12v at the connector to the fan. I am concerned about the known defect...I've read about that. I'll probably take it in to have the AC checked and if all looks good, I might try to replace the interior fuse box.
You have 12v at the fan connector, but the fan does not spin? Have you tested the fan? Sounds like the connector or fan is bad. Maybe test the voltage at the connector with it connected to the fan?
 
Reply
Old Dec 4, 2023 | 09:28 AM
  #12  
JohnZo's Avatar
Pro Wrench
Joined: Apr 2021
Posts: 1,411
Likes: 397
From: SE Washington State
Default

Originally Posted by Extinct
You have 12v at the fan connector, but the fan does not spin? Have you tested the fan? Sounds like the connector or fan is bad. Maybe test the voltage at the connector with it connected to the fan?
Or third potential problem is a bad ground circuit. If the fan spins with power and ground jumpered, then could be a bad ground connection (loose, broken, or corroded).
 
Reply
Old Dec 4, 2023 | 11:03 AM
  #13  
Roverwhelmed's Avatar
Thread Starter
|
Overlanding
Joined: Dec 2018
Posts: 21
Likes: 2
Default

YES! I have 12v at the connector but it does not spin. When I hook up the fan directly to the battery it spins just fine. I bought a new fan, just in case, but neither works when installed.

How would I determine/locate a bad ground?
 
Reply
Old Dec 4, 2023 | 11:08 AM
  #14  
ahab's Avatar
Pro Wrench
Joined: Apr 2018
Posts: 1,516
Likes: 442
From: SE PA
Default

Check for continuity between the ground connector at the fan and ground.
 
Reply
Old Dec 4, 2023 | 05:31 PM
  #15  
T-rex's Avatar
Rock Crawling
Joined: Jul 2013
Posts: 272
Likes: 180
From: Logan, Utah
Default

Had the same symptoms this past summer. It showed 12V at the fan but the fan wouldn't run. I left the lead from the multimeter connected to the fan wire while the fan was still connected, but then it wouldn't show 12V. The load of the fan would heat the bad solder joint in the fusebox and disconnect it. Remove the fan and it would show 12V again. I took the fuse box out and apart, found the bad joint at the arrow on the photo and added a little solder and reheated the joint and it's been fine since. I did have to buy a better soldering iron that I could get into the tight space, but not expensive off amazon.

Big photo so it can be seen clearly.


 
Reply
Old Dec 4, 2023 | 07:15 PM
  #16  
Roverwhelmed's Avatar
Thread Starter
|
Overlanding
Joined: Dec 2018
Posts: 21
Likes: 2
Default

Originally Posted by T-rex
Had the same symptoms this past summer. It showed 12V at the fan but the fan wouldn't run. I left the lead from the multimeter connected to the fan wire while the fan was still connected, but then it wouldn't show 12V. The load of the fan would heat the bad solder joint in the fusebox and disconnect it. Remove the fan and it would show 12V again. I took the fuse box out and apart, found the bad joint at the arrow on the photo and added a little solder and reheated the joint and it's been fine since. I did have to buy a better soldering iron that I could get into the tight space, but not expensive off amazon.

Big photo so it can be seen clearly.

I’ll give this a try…sounds promising!! I’m at my wits end with this issue.
 
Reply
Old Jun 25, 2024 | 08:35 PM
  #17  
T-rex's Avatar
Rock Crawling
Joined: Jul 2013
Posts: 272
Likes: 180
From: Logan, Utah
Default

One of my other trucks just had the same problem. On initial check it looked ok, but on closer magnified view, there was a crack in the solder. Same spot as the other one.


 
Reply
Old Jun 25, 2024 | 10:43 PM
  #18  
Roverwhelmed's Avatar
Thread Starter
|
Overlanding
Joined: Dec 2018
Posts: 21
Likes: 2
Default Solved!!!

I finally threw in the towel and took it to a local mechanic. He had it pegged in no time. Replaced the interior fuse panel and everything works just fine now.

I can’t believe I waited so long to do that.

I hope someone finds this thread and heads straight to the bottom…just go ahead and replace the fuse panel 🤣
 
Reply
Old Jun 26, 2024 | 12:54 PM
  #19  
Harvlr's Avatar
TReK
Joined: Sep 2020
Posts: 2,956
Likes: 754
From: British Columbia Canada
Default

Well that’s good news, but don’t you need to replace the BCU and Instrument Cluster that match when you replace the Fuse Panel?
 
Reply
Old Jun 26, 2024 | 02:08 PM
  #20  
mollusc's Avatar
Camel Trophy
Joined: Nov 2015
Posts: 3,560
Likes: 834
From: Staten Island, NY
Default

Interior fusebox can be changed without affecting the sync.
 
Reply

Thread Tools
Search this Thread

All times are GMT -5. The time now is 11:35 AM.