here's my problem.
car works for a week or 3, then the battery goes dead.
everything usually goes well... then i hit the car one time, 'n it feels weak... then after drivin it around even for an hour or so, its dead on the next crank.
once the car's started its always fine, never dies while i'm going.
i know the battery is fine, because i had it checked out at pep boys (load tested, 'n whatever.. took 'n hour 'n the computer spit out it was fine), and just to check i swapped batteries w/ my dad's m3 'n my car's still doing this and his is fine w/ my old battery.
the car will not die just from sitting...
it seams like driving it at night (with the lights on) speeds up the problem
i changed the brushes in the alternator, and looked at the ground wire on the alternator and it looked fine.
any ideas what's goin on?
the voltage across the battery is a low 12 volts, while my dad's e30 m3 always comes up as a high 13 volts. as far as i can remember my car has always read a low 12 volts across the battery... can anyone else check a 325i and verify? or is this a problem right here?
i disconnected the ground wire of the battery while the car is running, and it still runs fine.
my next idea is the alternator is weak but still working, if this makes any sense. plausable? or am i wasting my time on this idea? some sort of drain? ......YOUR HELP IS MUCH APPRECIATED, THANKS IN ADVANCE!!!!
car works for a week or 3, then the battery goes dead.
everything usually goes well... then i hit the car one time, 'n it feels weak... then after drivin it around even for an hour or so, its dead on the next crank.
once the car's started its always fine, never dies while i'm going.
i know the battery is fine, because i had it checked out at pep boys (load tested, 'n whatever.. took 'n hour 'n the computer spit out it was fine), and just to check i swapped batteries w/ my dad's m3 'n my car's still doing this and his is fine w/ my old battery.
the car will not die just from sitting...
it seams like driving it at night (with the lights on) speeds up the problem
i changed the brushes in the alternator, and looked at the ground wire on the alternator and it looked fine.
any ideas what's goin on?
the voltage across the battery is a low 12 volts, while my dad's e30 m3 always comes up as a high 13 volts. as far as i can remember my car has always read a low 12 volts across the battery... can anyone else check a 325i and verify? or is this a problem right here?
i disconnected the ground wire of the battery while the car is running, and it still runs fine.
my next idea is the alternator is weak but still working, if this makes any sense. plausable? or am i wasting my time on this idea? some sort of drain? ......YOUR HELP IS MUCH APPRECIATED, THANKS IN ADVANCE!!!!
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