What's the voltage at the battery with the car running ? Testing an not guessing is the way to do proper diagnostic's ! Battery light staying on , is there B+ voltage at the alternator connection's ? A new alternator won't make a bit of difference if no power to the alternator . Looking at a wiring diagram an testing the electrical circuit ,doing voltage drop testing , plus checking for DTC'S - diagnostic trouble code's . Some vehicle's charging systems are computer controlled . And looking at a wiring diagram i see your vehicles charging system is computer controlled . If you have done so already , take it to the dealer
SOURCE: 1992 Nissan Pathfinder charging problems
How long did the 2nd alt. last before it died? The voltage regulator is, I believe, attached to the alternator. Have u had the voltage regulator checked?
SOURCE: my battery wont keep its charge or charge properly ive tested the
Go to an auto parts store and buy a load tester for the battery. It doesn't cost much and sometimes if you bring the battery there they will test it for you with a load tester. It may have a dead cell which won't allow it to hold a charge or put out enough power. If you need a battery, some shops will install them for free. Good luck.
SOURCE: Daughter called me ..car wont
it sounds like you have blown fuse to the Alternator.. I don't know what car you are talking about but they charging systems vary.. But if alternator isn't getting all the power it needs it won't charge. this should be checked.
good luck
SOURCE: battery won't stay charged alternator is good. so what could be the cause?
check alternator wires for damage.your drive belt could be slipping.replace battery cables.check alternator fuse.code scan for pcm fault since it pcm controlled.
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2002 Mazda Tribute
Have you changed the battery before
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