so after it's been sitting for about 5 months...i took my 89' 325i out for a spin a couple days ago.
the battery was dead, so i jump started it and it started up on the first try.
but just now i tried to start it again and nothing...no power, so i got the jumper cables out and it turned over but as soon as i disconnect the cables the car turns off.
i tried leaving them on for a few minutes and same thing...as soon as i disconnect the negative (-) it turns off.
Is this because I have a shitty old battery or will i need a new alternator?
Last edited by e30blue; 03-23-2009 at 05:39 PM.