Battery light has been coming on at high rpms, then came on sooner at lower rpms, knew the alternator was on its was, finally it stayed on, then lost all power etc etc (this was over 3-4 weeks)

replaced the alternator, runs much better now, how ever at low idle in gear rpms (650 or so) the battery light comes on, soon as its in neutral or driving it goes away... im assuming the Battery is messed from the alternator going and at low RPM the alternator isnt putting out as much juice as the car wants?

(this is a 98 duratec, auto)

ideas?

Battery is only 6 months old and under warrenty regardless


98 contour gl, v6 auto 01 explorer sport v6 auto 2001gtp AT gmail DOT com