hello i own a 00 base mustang with the v6 5 speed 3.8 yada yada yada ok i can not get the alt to charge had it tested and it test good battery still runs down while driving cant even run car 20 minutes off a twenty minute jump charge mean hooking jump cables up letting boost car run for 20 minutes then starting and driving. ok so yesterday i bought alternator had it tested, test ok put it in ran boost car for 20 minutes to make sure i had full charge on battery before starting started right up battery light still on no charge, got to oriellys they said battery was no good well of course thats what there cpu is going to say i ran the car 5 miles straight off battery with out being charge, but just too humor them i bought a battery put it in car started right up same thing battery light on ran it for 10 minutes turned on ac voltmeter dropped instantly sputtered died had alt rechecked checked just fine, replaced whole wireing harness from alternator too distrubtion box ran car for 20 minutes again too jump fired up car same thing. im so baffled and peeved i dont know what to do all my connections are fine battery is fine alt is fine and fuse is fine.....please help!!
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