Join Date: Jun 2012
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Low Voltage Issue
I have had this happen a few times now and usually putting a new alternator on will cure it but this time its not. The truck has two newer motocraft 850 CCA Batterys with brand new alternator. When i try to crank over it turns really slow. If i can get it to start by jumping it the voltage only shows 12.5 at idle and 13.2 while driving. The Ficm is healthy and is running between 47.5 and 48. I checked for draw and i am only seeing between 16 and 21 mA. I have had the new alternator load tested and it passed. I have also dropped the batterys off at Oriellys and the claim both batterys are good but I took them to the dealer to double check and they confirmed both are good. Anyone have any ideas to try next i have done everything i can think of and my next step will be dropping it off at a local diesel shop to just get it working because this is boating season and I NEED MY TRUCK!!
2006 F-250 - 5'' Exhaust, SCT Livewire TS (tuned by Tony Wildman), 4'' lift, Moto Metal wheels, 35'' Fierce Attitudes.
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