ivantruckman Posted July 17, 2017 Share Posted July 17, 2017 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 . Quote Link to comment Share on other sites More sharing options...
idosubaru Posted July 17, 2017 Share Posted July 17, 2017 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. Quote Link to comment Share on other sites More sharing options...
jsyme Posted July 17, 2017 Share Posted July 17, 2017 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... Quote Link to comment Share on other sites More sharing options...
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