Make sure battery has a full charge and connections all good. If battery is down, use a charger and get it charged up. If problem with battery or generator wiring circuits, replacing the component won't fix it. You can use a digital multimeter and do a lot of testing on those systems.
Another thought, you have too much battery drain with everything off. If that is the case, check for light left on, somewhere, best time to check is in the dark. You can pull replace fuses, one at a time, when you pull the fuse on the problem circuit, the drain returns to normal. A digital multimeter should have a 10 amp setting on it, plenty enough to check for drain, place in series with one of the battery cables, take a reading, usually not even a tenth of an amp.
SOURCE: Battery wont keep charge
It seems as though the battery is feeding something that is turned on. Turn everything off in the car with the battery fully charged. Fold down the rear seat and see if the boot light is on. The problem can be found by trail and error. If you know a mate who can use a multimeter then he could do a check on the battery. If the battery is loosing its voltage, take out one fuse at a time to isolate which curcuit is drawing the power.
SOURCE: battery wont hold charge
HI. you may have a battery drain issue that is sapping your battery overnight.
Here is the procedure I use to isolate a battery drain. Remove negative battery cable from the battery. Using a 12-volt test light, hook one end to the negative battery post the other end to the negative battery cable you just disconnected. The test light will glow or "light" if there is a drain. If the "light or glow" is faint, that is probably normal draw for the clock or computer. If the "light or glow" is bright, then there is a large drain. That should be corrected. Now start removing and replacing the fuses one by one until the light goes out; that one will be the circuit with the drain. Remember to hold in the button in the door jam for the interior lights.
SOURCE: Won't hold a charge
Sounds like good answers...most likely the battery has a bad cell...you can get a free test at most parts stores...(Take your jumper cables with you, so you won't be stranded...Hope this helps.
SOURCE: 2003 kia sedona wont charge battery with new alternator
well are you sure that you have a good or it just shows the correct
amount of voltage. which that should 12.6 volts for a fully charged
battery. to actually answer your question, (assuming)
you do have a good battery your alt. shouldn't keep it from cranking
unless it is locked up, but you would use a digital volt meter and
select the d.c. volts setting touch the red (positive lead) to the red
(positive post) on the battery and the ground ( black lead ) to the
ground terminal on the battery (negative post). it should read very
close to 14 volts. if not check to see if you are getting voltage to
your alt. by using your volt meter to test the power wire going to your
alt. it will be the one on the backside of your alt with a protective
boot over it. with your volt meter still set on dc volts touch your
black lead lead to a good ground and your red lead to your power wire
going to your alt. it should have 12 volts there. if not check your
fuses. if your car clicks when you try to start it then you may have a
bad battery connection. dirty terminals with corrosion built up on them
will do the same thing. also a starter that is bad will click because
the bendix can't kick out to engage the flywheel to turn your engine
over. well hope i answered your question and then some.
SOURCE: 94 Jeep Grand Cherokee will not start
just had this happen on same type of car
drove me crazy for DAYS.. FOUND IT WAS JUST AN ALTERNATOR FUSE.!!! UNDER BLACK BOX BEHIND THE BATTERY
FIVE BUCKS AT ANY AUTO STORE...
THIS WAS AFTER SPENDING 120 ON A NEW BATTERY....
THATS ALL IT IS
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