It could be that it was miss diagnosed.
Some other things to check, make sure the belt is good and tight and it is not worn, if the belt is really loose might consider replacing it, or even the belt tensioner.
You should be able to take the altenator into almost any parts store and they should be able to bench test it for you. If the altenator is testing fine on the bench test.
You might consider checking the fuses inside of the fuse panel inside of the engine compartment, look for a high amp fuse that says bat or alt on it. On some vehicles they have a square plastic fuse that is between 60-120 that controls the high side output of the altenator.
Also make sure the power wires to the back of the altenator is secure and tight, inspect the wires for any bare spots where the coating from the wire could have been worn or chewed off.
If everything tests out fine and you are still having problems, charge up your battery, and for a couple of days, when you shut the car down, pull the power wire to the battery.
If the battery still has enough juice then you have a power drain in the system somewhere.
With what you are describing it would probally be a major part of the system, such maybe the headlights are not getting shut off, dome light staying on ect.
Tuesday, July 22nd, 2008 AT 11:20 PM