Author Topic: k100 RS 4V fan issues  (Read 4635 times)

Offline Alex4Motion

  • Curious
  • Posts: 9
  • No stock Bikes...
k100 RS 4V fan issues
« on: August 26, 2016, 02:24:15 PM »
Hello to all...

With all the changes that are made ​​in brick, i never had electrical problems !!!

But since last week...different story!!
As I turn on the brick , the fan starts to work !!
Even with  the temperature sensor plug off !!
The fan only stops working when I remove the fan relay !!
Already changed the relay by others who i know are working!!

As the signal to activate the relay comes from motronic, whow can i chek that???

Someone has gone through similar situation ??


Safe Rides..
  • Portugal
  • k 100RS 4V 1992, Fat Boy 1992

Offline Laitch

  • Faster than a speeding pullet
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Re: k100 RS 4V fan issues
« Reply #1 on: August 26, 2016, 05:39:24 PM »
As the signal to activate the relay comes from motronic, whow can i chek that???
Someone has gone through similar situation ??
There is a thread where a guy had the same situation as yours. In that thread is this description of where to check the Motronic.

Thanks for posting your bike photos. It's a nice looking rig.
  • Along the Ridley in Vermont.
  • 1995 K75 89,000 miles

Offline Alex4Motion

  • Curious
  • Posts: 9
  • No stock Bikes...
Re: k100 RS 4V fan issues
« Reply #2 on: August 29, 2016, 05:17:22 AM »

Thanks a lot ...

Happy to know that you guys like my riding...


Safe Rides..
  • Portugal
  • k 100RS 4V 1992, Fat Boy 1992

Offline Alex4Motion

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  • Posts: 9
  • No stock Bikes...
Re: k100 RS 4V fan issues
« Reply #3 on: August 29, 2016, 06:38:23 AM »


Laich, the topic isn't over!!

I still don't know what's  going on with the brick!!???

With the temp sensor plug, unplug, fan relay on and motronic on!!
As i turn on the key, fan on!!! Temp idiot light on!!

Does the motronic by defect send a negative (-) signal to the fan relay wen the temp sensor is bad to avoid over heating's???


Thanks a lot


Safe Rides
  • Portugal
  • k 100RS 4V 1992, Fat Boy 1992

Offline Alex4Motion

  • Curious
  • Posts: 9
  • No stock Bikes...
Re: k100 RS 4V fan issues
« Reply #4 on: August 29, 2016, 06:40:15 AM »
Sorry, forgot the pictures!!!  :yow
  • Portugal
  • k 100RS 4V 1992, Fat Boy 1992

Offline Alex4Motion

  • Curious
  • Posts: 9
  • No stock Bikes...
Re: k100 RS 4V fan issues
« Reply #5 on: August 29, 2016, 07:03:44 AM »


With the motronic disconected!!
No temp idiot light!!
No fan!!
  • Portugal
  • k 100RS 4V 1992, Fat Boy 1992

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