Jump to content

Welcome to Ultimate Subaru Message Board, my lurker friend!

Welcome to Ultimate Subaru Message Board, an unparalleled Subaru community full of the greatest Subaru gurus and modders on the planet! We offer technical information and discussion about all things Subaru, the best and most popular all wheel drive vehicles ever created.

We offer all this information for free to everyone, even lurkers like you! All we ask in return is that you sign up and give back some of what you get out - without our awesome registered users none of this would be possible! Plus, you get way more great stuff as a member! Lurk to lose, participate to WIN*!
  • Say hello and join the conversation
  • Subscribe to topics and forums to get automatic updates
  • Get your own profile and make new friends
  • Classifieds with all sorts of Subaru goodies
  • Photo hosting in our gallery
  • Meet other cool people with cool cars
Seriously, what are you waiting for? Make your life more fulfilling and join today! You and your Subaru won't regret it, we guarantee** it.

* The joy of participation and being generally awesome constitutes winning
** Not an actual guarantee, but seriously, you probably won't regret it!

Serving the Subaru Community since May 18th, 1998!

Guest Message by DevFuse

- - - - -

Possible Ignition swith failure

  • Please log in to reply
2 replies to this topic

#1 ivantruckman


    4 inch lift

  • Members
  • 956 posts
  • caro, MI.

Posted 17 July 2017 - 10:13 AM

My  1991  loyale   will discharge the battery  if not run in   3 or 4 days ,   Alternator is  good ,  Battery is new , and I load tested it ,  Did a specific  gravity test,  all cells  good .   I remember hearing   about  the  ignition switch  going bad  and  doing all sorts  of  weird  things.      Any  help  would be appreciated .   

#2 idosubaru


    Elite Master of the Subaru

  • Members
  • 24,023 posts
  • East Coast

Posted 17 July 2017 - 10:31 AM

If battery is good then it's really simple - you have an excessive draw.


Just google how to test for draw.


You'll find something is causing the draw to exceed 100mA.  

Measure the draw and disconnect the alternator and start pulling fuses until the draw dips below 100mA. 

Once you find the thing that's causing the draw- then you can narrow down  what on that circuit is causing it. 


It's often something installed, fabricated, custom, non-working, or part with glitches. 


It's helpful to disconnect the trunk light and interior lights and XT automatic seat belts as they create a spike in draw every time you open the door/trunk which is common when diagnosing and troubleshooting. 

#3 jsyme


    USMB is life!

  • Members
  • 152 posts
  • ColoSpgs, Colorado

Posted 17 July 2017 - 11:29 AM

Sanity check:  Turn off everything and then remove the negative battery terminal, then slowly re-add the cable and look for a spark. That spark is evidence that something is turned on.  

You can repeat that test with a single fuse removed, one at a time, until it doesn't spark any longer. That will give your the circuit you need to focus on.


My brother had so many problems with his custom travel van he just installed a main breaker at the battery: It makes it  less apt to be stolen too.


yep:  what idosubaru  said...

0 user(s) are reading this topic

0 members, 0 guests, 0 anonymous users