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Power Strokes
6.7 Tech
Battery light p0620 Dual alternator
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[QUOTE="Bean67, post: 1429486, member: 27259"] OK so just an update i broke down and took it to the ford dealer. They ran a test on my charging system and said my batteries were good, and alternators were good. so than they did the wiring pin point test and found the return wire from the L/s alternator to the PCM that tells the PCM what the charging system is producing was bad. Wire has high resistance. Unfortunately there wasn't enough time to fix the issue before the dealership closed and i wasn't about to ask the tech to stay and fix it on a friday. So made a follow up appointment and service writer said there are two options i can do to fix the issue. either A run a new wire from PCM across the cowl over the motor and down the L/S of the truck to the alternator pig tail, or i can have them spend the time to cut the harness apart and try and find the exact spot and cut and splice in new wire. so i'm going to have them run a new wire that why i know it wont happen again and it will be a solid wire and i don't have to worry about the connection going bad between the wires. So issue should be fixed later this week i will post gain with a follow up if this truly is the fix. [/QUOTE]
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Battery light p0620 Dual alternator
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