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Erratic charging voltage
Posted to Technical Discussion Forum on 1/24/2017 24 Replies

We replaced the alternator for a no charge condition and now have a low and erratic charging voltage at idle. Voltage at idle is around 12 volts with spikes to 13+ volts. The spike is enough to notice in the vehicle lighting. The voltage is a steady 13.6 with ... Login to read more.

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car Vehicle Data

2006 Mercury Montego Premier 3.0L

Engine3.0 L
Trans6-speed Automatic (Electronic)

car Vehicle Data

2006 Mercury Montego Premier 3.0L

Engine3.0 L
Trans6-speed Automatic (Electronic)