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Power Strokes
6.0 Tech
Battery voltage while driving
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[QUOTE="PSD POWER007, post: 1538956, member: 13870"] I’ve been curious about this too. My voltage is the same from the alternator post all the way to the fuse box power supply. But the other side of the fuse box reads lower and matches what my CTS2 reports through the OBD2 port. Usually 13.9-14.1v at the alternator/batteries and bounces from 13.1-13.8’ish on the CTS2. On my 7.3, the readings are virtually the same throughout the system 13.9-14.1v. On both my 6.0 and 7.3, all cables have been upgraded, new batteries, upgraded and additional grounds with clean connections. [/QUOTE]
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