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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

Low voltage?

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Old Jul 11, 2019 | 08:27 PM
  #16  
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87crewdually
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Originally Posted by TooManyToys.
Not a fan of any rebuilt alternators as all the replacement parts come from the lowest price China resources.

First........... Second, you have to understand that while the alternator may be rated at 110a, 140a or whatever, that's at full RPM in a cold state. By design, the regulator should reduce voltage under hot underhood conditions to protect the batteries. They chemically don't do well with a high voltage when they are hot, it's why southern state batteries typically fail faster. 13.6v should be the lowest by regulation but can go lower without issue to electronics. So then we get to paranoia, or comfort range, depending on your view.
Couldn't agree more. Any of the modern vehicles I've been in all lower the voltage output once the battery is "topped" off. This is really noticeable on my Yukon since it has an actual battery gauge with numbers and everything.
 
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Old Jul 11, 2019 | 10:12 PM
  #17  
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Yukon ..... hope you take better care of one than we did. Our kids were heavy, those were 50 pounders. Targeted wife was 300.




 
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Old Jul 11, 2019 | 10:49 PM
  #18  
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Haha. It hauls the weight too and the airride compensates for suspension but do wish the brakes were a little better. That's all I can say about that. We do love it though for the past 6 years or so. Far cry from the Escape it had replaced.


Sorry for the derail.
 
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Old Jul 12, 2019 | 06:04 AM
  #19  
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Depending on the year, I'm not sure if we were still the supplier of friction materials as we were in 2007.

If it's stock, it uses "ceramic" (Potassium Titanate fiber) friction material. At the time, it was the highest GVW that anyone could get to pass FMVSS requirements. It did so by the test requirements, but that with new condition, not age tested in service.
 
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