Fill it up again Dummy
Join Date: Sep 2012
Location: Central Valley, Sierra Mountains, California
Thanked 163 Times in 151 Posts
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^^^X2 you need to get gauges on that truck. You need to figure it out before a ficm winds up on your list. If the alt is bad I recommend getting a good replacement like DC Power or something comprable. 190 amps is a good size, minimum should be 140 amps.
Myself I run a 190 amp and have a seperate #4 cable straight to battery as well as the factory cable off alt, it never runs off of batteries. The aftermarket alternators have a higher cut-off voltage in the high 14v range 14.4-14.8 volts is common when not under a heavy load much easier on ficm.
Also 1000 CCA quality batteries are well worth the money these trucks are so computer dependant it's important to have good electric components.
MONITORING GAUGES: Whether you get a cheap ScangaugeII or a nicer unit it's a MUST HAVE ITEM. It will Save you money in the long run and that is the truth !!!
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2006 F250 LARIAT CCSB 4X4
ARP Studs, O-Ringed Heads
X4 PHP 65 HP Custom Tow Tune
CAT EC-1 Coolant, IPR Coolant filter
Fass-125 to a Adjustable Pressure Reg.
Turbo-back SS 4" pipe, Corsa Muffler -7" Tip
6.4 starter, DC Power 270 amp alt
Die Hard Platinum AGM all 2/0 Cables
Fabtech Radius Arms
7" lift w: Icon Progressive Coil Springs
2008 up Carli/Deaver rear springs
2000 Watts of McIntosh Bliss
All riding on some Fatty-Daddy 38/15.50/18 Toyo's