Wont charge new batterys goes dead fast
Wow no year stated, nor car. a willis jeep> 1945?
in 1945 it has no Alternator !
General answer , for all cars:
dead parked, or dead moving ?
no person can help lacking that critical fact,
sounds to me like, impossible question !
if it goes dead moving the alternator /gen system is failing.
if the battery goes dead parked, that means you have phantom drain.
we can find out which it is , with a $10 DMM meter at walmart
$20 is a better buy.
so if it drains over night check for lamps stuck on.(aka. dark current)
if drain driving, then.
check for 13.3 to 15vdc, running, engine.
if low, the alternator system (charge) is failing
at no time did i say any part was bad or to buy them. (i never do until i do tests)
drains here.
http://www.fixkick.com/drain/drain.html
works on all cars.
moving dead.:
there are other rare causes..
like the engine will not idle at 800 rpm or more.
see this, the alternator goes off line below that much.
and can drain a battery fast deep in the city at infinite red lights
and traffic jams.
that is why getting a car with hands on service by a real ASE
tech, works best , he /she sees all this in 5 min flat.
saving all this grief.
like , oh crud, it idles a 500! (that be it)
or charge lamp is on?
the old jeeps love to kill batteries, with old DC generators. (ask)
oh my, the OBD2 scan tool says my ALternator is off line.
or other DTC errors, about power lost to many places.
use a scan tool if car is newer.
this car?
http://barrettjackson.com/staging/carlist/items/Fullsize/Cars/96748/96748_Rear_3-4_Web.JPG
sad the owner can't tell year or model.
Testimonial: "no speedometer 96 taurus"
no speed, what does that have to do with charging, the alternator needs to put out 13.3 to 15vdc, running if not its bad, or idle too low , below 800 is posslbe, even 500 and the alternator doent like that. also goes dead when , parked, over night, or driven , phantom drains is overnight loss of charge. my brother law, just did this, his 50 buck license plate lights were stuck on, silly huh? my guess is alt, only based on one word, fast (less that 4hr) if fast is less than 1 week, well, that be, phantom drains.
this is a jeep not a 96 taurus, how posted 96 comment)
start car, take any voltmeter and report voltage. across battery, or go to walmar the have a hand computer tester that , an expert system that anyone can use, shows what is wrong. in 1min flat. but we can find it fast with just a voltmeter and 5min work, everytime. easy
do tell fast, and when under what conditions, parked or driving.
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Sounds to me like you need an alternator.
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