mgreen ... 5/23/2013
2002 Ford Windstar LX 6 Cyl 3.80L
battery drains overnight
only happens when the care is off overnight
If you haven't had a load test done on your charging system, With a Voltmeter and engine running - set meter to DC volts and read across the battery terminals. It should read 13.5-14.5 volts. If below this then suspect your alternator, or belt drive tensioner, or slipping drive belt.