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Old 12-24-2003, 09:41 AM
e320wagon4matic e320wagon4matic is offline
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Join Date: Nov 2002
Location: Metrowest, Mass
Posts: 29
Hi Zeus,

IMO your voltage measure @2000 rpm with full load is an excellent test. This represents "normal operation", and the alternator output voltage should be where glmoy suggested - 13.2 to 14.1 volts.

The 12.57 volts you measured actually represents a discharging condition (if your battery was fully charged).

I'd feel comfortable with a decision to repair/replace the alternator.

2001 e320 wagon
2004 F350
2006 Crown Vic
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