the battery is good and the alt is also good battery is not charging on 2003 Hyundai Sonata

old alt was at 8v with engine running, i replaced the alt

by in Ramona, CA on September 29, 2012
2 answers
ANSWER by on September 29, 2012
check for power going to the alt if you have power you might have a defective alt
ANSWER by on October 04, 2012
Which post (wire) is reading 8V when running? Normally you should see battery voltage while running , if alt is not charging, 8V would tell me either bad cells in battery , or excessive corrosion in wiring/connection(s). Get circuit info so you know what to expect. Fully SLOW charge the battery and then test , before putting on more parts.