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parasitic drain has me stumped

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This topic contains 1 reply, has 2 voices, and was last updated by vincenzo masiello vincenzo masiello 10 months ago.

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  • #993574
    Jonathon Enger
    Jonathon Enger
    Participant

    I’m at the end of my rope with this parasitic drain on my 2011 Nissan Pathfinder Silver 4.0 V6. I have pulled every fuse and relay under the hood and in the glovebox. I have also disconnected the alternator, and completely removed the alternator to test the diodes. I put a brand new battery in the vehicle and the alternator appears to supply the correct voltage while the engine is running. When I connect my multimeter in series between the negative terminal and cable, I show anywhere from .5-.9 amp draw. I took the car for a drive today and checked the battery shortly after, and it was at 12.7 volts. I checked again 9 hours later and it was down to 12.37 volts. I don’t know what to check next. Any suggestions?

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  • #993602
    vincenzo masiello
    vincenzo masiello
    Participant

    do you have any “data logger” device in your arsenal or any multimeter that records voltage over hours (you can make one with an arduino and an sd card shield) or at least a very long wire that goes from the car to where you spend most of your time inside to keep an eye? you can use the security camera app in an old phone or a baby monitoring camera and keep the Ammeter under the hood as long as you can monitor every 20 mins or so. When you leave the car, it does not go to “sleep” instantly, but after a few minutes. In addition to that, without a continuously connected trickle charger (or one of those little solar ones that you leave on the dash), batteries do discharge at a few milliamps all the time

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