Notices
928 Forum 1978-1995
Sponsored by:
Sponsored by: 928 Specialists

Radiator Fan Controller Issues (The hobby just keeps getting better)

Thread Tools
 
Search this Thread
 
Old 06-03-2011, 11:58 PM
  #1  
928 at last
Rennlist Member
Thread Starter
 
928 at last's Avatar
 
Join Date: Jul 2008
Location: Aurora, Ontario, Canada
Posts: 2,200
Received 2 Likes on 2 Posts
Default Radiator Fan Controller Issues (The hobby just keeps getting better)

OK, Maybe a question for Alan.....
But, here we go.
Brief history.
Rebuilt the fan motors last year. New brushes etc. all seemed well.
Ok, maybe they were a little louder than before, but working well..
Then, passenger side ceased operations with no prior notification.
Logically, and if history is anything to go by, I screwed up the rebuild...no new surprises here.
Tonight after resolving the fuel issues, I began looking at this problem.
With the car not running, the key to the "On" position and the AC button engaged, the driver's side runs as one might expect. No activity on the passenger side though.
As the driver's side seems to cycle to a lower setting briefly every so often, there is a short power pulse to the passenger side on power-down only and only twice, for less than a second each. (Used 12V Test Light for the diagnosis).
Other than that, no power feed at all.
Checked the search, and seems to be a controller issue, so I pulled it, and cleaned the board with DeOxit, and reassembled.
No Change.
Any thoughts or advice would be appreciated here.
Thanks!
Old 06-04-2011, 12:15 AM
  #2  
Mrmerlin
Team Owner
 
Mrmerlin's Avatar
 
Join Date: May 2004
Location: Philly PA
Posts: 27,894
Received 2,251 Likes on 1,245 Posts
Default

first check the fuses for the fans,
then check the 2 small red wires connected at the battery terminal.

Also check the connectors at the fans if any are burned or brown then the connection is dirty.

There was also a post on here about someone replacing the resistors in the fan controller , complete with pictures and part numbers
Old 06-04-2011, 12:28 AM
  #3  
Mrmerlin
Team Owner
 
Mrmerlin's Avatar
 
Join Date: May 2004
Location: Philly PA
Posts: 27,894
Received 2,251 Likes on 1,245 Posts
Default

more to read

https://rennlist.com/forums/928-foru...fan+controller
Old 06-04-2011, 12:32 AM
  #4  
Mrmerlin
Team Owner
 
Mrmerlin's Avatar
 
Join Date: May 2004
Location: Philly PA
Posts: 27,894
Received 2,251 Likes on 1,245 Posts
Default

found it ,

enjoy....

https://rennlist.com/forums/928-foru...ive-fixed.html



Quick Reply: Radiator Fan Controller Issues (The hobby just keeps getting better)



All times are GMT -3. The time now is 05:31 PM.