Mechanics

FORD CROWN VICTORIA BATTERY PROBLEM

1998 Ford Crown Victoria • 145,623 miles

The alternator in my 98 cvpi makes a buzzing or humming sound when the car is off.I know that the noise is a draw on my battery. The alternator is new and so is the battery, however every morning I go to start car and battery is dead what can cause that
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Guest
February 23, 2013.



That's an option not many other people got! Check if the "Battery" light on the dash is turning off. That is is the turn-on circuit for the built-in voltage regulator. If the light is on, you have an ignition switch problem. If it is off, I suspect the voltage regulator is defective. One wire to it, (typically yellow) will have 12 volts all the time so there is a power source there if there's an internal defect.

Caradiodoc
Feb 23, 2013.