duct tape & zip ties
Join Date: Jul 2006
Location: Willis, MI
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Replace the alternator. The alternator should put out 13-14 volts at all times. If your only putting out 12 and when you raise the rpms you get 14 then your alternator is bad. A weak alternator will damage the batteries. Just like bad batteries will damage a good alternator.
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Your Actions Today, Decide Your Future Tomorrow
2005 6.0 Crew Cab Long Box Lariat, current truck
2004 6.0 destroyed by contaminated fuel
2002 7.3L burnt