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2001 Dodge B3500 van mystery battery drain

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Old 08-22-2022, 12:34 PM
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Default 2001 Dodge B3500 van mystery battery drain

Mystery battery drain. Battery is NEW. I did parasitic drain check.....attached multimeter in series to battery NEG. .Multimeter reads 0 drain.
Did fuse voltage loss check...all circuits good. NOTHING electrical is on in van. Battery drains to about 7 volts in 3-4 days. WHAT CAUSING THIS?????
 
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Old 08-22-2022, 01:29 PM
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"Attached multimeter in series to battery NEG"
Maybe I am wrong but I do not think you tested amp flow correctly using your meter. Do you get a slight arc when you touch the battery cable terminal back onto the battery?
I would try to pull the fuses one at a time, while monitoring the amp flow to isolate the faulty circuit and go from there.

 
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Old 08-22-2022, 06:05 PM
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Yeah, gotta measure amp draw on the positive cable.
 
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Old 08-22-2022, 09:48 PM
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Thanks for your reply.
Yes I get a small arc when attaching NEG cable back onto NEG battery post.
Did the fuse check and every circuit checks out OK. Still a mystery ????
 
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Old 08-23-2022, 05:30 AM
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Glove box light? Alarm system? I would also disconnect the alternator and check for drain.
 
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Old 08-23-2022, 06:48 AM
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Meter needs to be set on milivolts.
 
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Old 08-23-2022, 09:57 AM
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Default 2001 Dodge B3500 van mystery battery drain

Thanks for your reply. You suggest I set meter at millivolts...yet the uTube you attached clearly shows meter set at AMPS....which I did. Confused !
 
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Old 08-23-2022, 10:34 AM
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Should be set for milliamps. Do NOT turn the key on while testing. The meter isn't designed for much more than about 10 milliamps...... you'll smoke it right quick.
 
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Old 08-23-2022, 10:33 PM
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Can't pull the fuses one at a time, while monitoring the amp flowt because I have ZERO amp flow reading on my meter !
 
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Old 08-24-2022, 12:10 AM
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Send us a pic of your meter set where you are testing. Something doesnt sound right. Do you have another meter?
 


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