Alternator/charging questions

Well the new thing is I checked the voltage on the battery (an optima) and it read 2.6 volts. I unhooked the battery cables and the volts went to 4.6 WTF! Anybody know if this would cause the symptoms described? Right now it's on a charger.Help?

do you mean 12.6 and 14.6?

are you unhooking the cables with the car running? if you are , its not a good idea because you can fry the diodes in the alternator. a normal "good" battery sits at 12.6 or so. i would re-ground everything including the engine ground/body ground and VR at the firewall first.

maybe 67dart273 will chime in and point you in the right direction