Dead Battery 6.4 - Ford Powerstroke Diesel Forum
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post #1 of 7 Old 09-28-2012, 06:03 PM Thread Starter
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Dead Battery 6.4

Hey Guys,

How do you jump start a 6.4? Which Battery?

Thanks

2003 F350
Bulletproofed
MBRP 5'
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post #2 of 7 Old 09-28-2012, 10:03 PM
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I've seen guys do it either way, personally I would jump to the main battery (I forget which side its on, drivers I think) its the one with the cables that go directly to the starter. Then when you can take your batteries out and charge them on the lowest amp setting you schedule will allow. That is assuming your wanting to keep them for a while.

2008 (Job 1) F250 King ranch 4x4, snow plow prep package with 2.5 level. Black Maxx, B&W Diehard platinums. Dieselsite coolant and transmission filters, NCU Motorsports/amsoil oil bypass kit. Turbo blankets, 5.5 PMF traction
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post #3 of 7 Old 09-29-2012, 10:24 AM
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There isn't a "main" battery: they're wired in parallel. You can have your truck jump started off of either one.


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post #4 of 7 Old 09-29-2012, 07:51 PM
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Well I figure why have the juice go from one battery over to the other battery then down to the the started. I call the battery that goes straight to the starter the "Main Battery" And ya with them being parallel it really doesn't matter.

2008 (Job 1) F250 King ranch 4x4, snow plow prep package with 2.5 level. Black Maxx, B&W Diehard platinums. Dieselsite coolant and transmission filters, NCU Motorsports/amsoil oil bypass kit. Turbo blankets, 5.5 PMF traction
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post #5 of 7 Old 09-29-2012, 08:00 PM
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Hot on dead batt's hot lug.
Negative on dead truck's GROUND, not lug. Just jump it like any vehicle.



2000 F-350 Lariat Super Duty, Dually, CCLB, 7.3L
4R100, 2wd
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post #6 of 7 Old 10-08-2012, 05:54 PM
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I have a dumb question why do these trucks have 2 batteries well all diesels my wife asked me and I didn't really know


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post #7 of 7 Old 10-08-2012, 06:14 PM
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High compression. A single battery does not have enough power to compress all that air, so you need more power.



2000 F-350 Lariat Super Duty, Dually, CCLB, 7.3L
4R100, 2wd
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