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I have an '01 Durango that has a power drain. I hooked up a meter on the negative side and it showed 12.3. I started pulling fuses from both fuse panels and didn't see a drop. I disconnected the positive cable from the fuse panel and the power drain dropped off to 0.2. What can cause this and what should I do to fix it?

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    I've got some questions: What problem lead you to start investigating the drain? Is the 12.3 a voltage or a current reading? Where did you connect the meter (to the negative side of what? where was the other meter probe?). – dlu Dec 12 '16 at 1:15
  • Disconnected the neg side of the battery connected the meter between the cable and the post and its voltage – Wade Christenson Dec 12 '16 at 1:34
  • So, I think back to the first question of my comment above – can you tell us what lead you to start investigating this? – dlu Dec 12 '16 at 5:39
  • Battery kept being drain when sitting new battery charge it up and three hours later dead – Wade Christenson Dec 14 '16 at 1:24
  • Does the battery hold a charge if not connected to the car? – dlu Dec 14 '16 at 1:45
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This is not a power drain, this is normal. Your battery will sit at ~12.4 V with the car off. You can pull out all the fuses in the world, you can even take the battery out of the vehicle and carry it a full mile away from your vehicle, it will still read ~12.4 V.

If you are really investigating a power drain, you need to measure current, not voltage. Repeat your procedure (you were doing the right thing), just switch your meter to DC amps.

  • Also, make sure that you're on a suitable scale. The normal draw when the car is turned off will be a few 10s of milliamps. Most meters with an amp scale can measure this, but if the draw is large you may blow a fuse in the meter if the you're on the wrong scale. Many meters have three jacks for test leads, one often on the left, is for a higher amp range. Start there so that you don't end up having to look for a new fuse… – dlu Dec 12 '16 at 5:42
  • Sorry was on the right scale i miss spoke – Wade Christenson Dec 14 '16 at 1:26

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