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6.0L Power Stroke Diesel 2003 - 2007 F250, F350 pickup and F350+ Cab Chassis, 2003 - 2005 Excursion and 2003 - 2009 van

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Old Apr 23, 2012 | 06:33 PM
  #1  
GeneLaw1's Avatar
GeneLaw1
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From: Atlanta, Georgia
Batteries

I have always wondered this:

1. Why do the trucks have 2 batteries, do they serve separate purposes? Or do they work together for one purpose (starting the truck I would guess).

2. If you need to jump the truck, which battery do you hook up to jump!?

Cheers,
 
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Old Apr 23, 2012 | 07:21 PM
  #2  
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From: Middle Tn.
Originally Posted by GeneLaw1
I have always wondered this:

1. Why do the trucks have 2 batteries, do they serve separate purposes? Or do they work together for one purpose (starting the truck I would guess).

2. If you need to jump the truck, which battery do you hook up to jump!?

Cheers,
1. Diesels have abnormally high compression and you have to feed the glow plugs = Hi current draw.
2. Preferably the pasenger side but either side will work. They are in parallel.
 
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Old Apr 23, 2012 | 07:25 PM
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From: Blue Hill Township
Originally Posted by GeneLaw1
I have always wondered this:

1. Why do the trucks have 2 batteries, do they serve separate purposes? Or do they work together for one purpose (starting the truck I would guess).

2. If you need to jump the truck, which battery do you hook up to jump!?

Cheers,

They are needed because of the amount of current needed to burn the glow plugs and turn the motor over.

I know some people have a preferred side to jump start from but if I am giving somebody a boost I hook up to whatever side is closest.

Always replace the batteries in pairs.
 
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Old Apr 25, 2012 | 01:49 AM
  #4  
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From: Orange County, So. Calif
Batteries/capacitors

[SIZE="4"]Ol hotrod was visiting another diesel website yesterday and hit on a weird post. Op had taken both batts out and made up 2 sets of capacitors for starting his diesel. Reportedly spun / cranked at a higher rpm and started right now. Had pics of the setup posted.

I inquired about 'what if eng probs prevented quick start, and prolonged crank was needed?' Reply was that only cranked for about 5 - 6 sec's then taper to nil. Recharge was via reg charger, but very quick recharge on the capacitors.

Prolly sev other ??'s to be asked, and answered. So be it, but it was interesting reading...
[/SIZE]
 
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