balta1003

Hi i need some help with My 93 ZJ throwing code41 ive never had any issues with my jeep this is the first in the year ive owned it. Today i was pulling out of mcdonolds and noticed my dash lights were really dim so i checked dimmer and it was up all the way then realized my volt gauge was at about 9-10 volts everything still worked great so i parked it came back out a hour later started just fine but still real low voltage as i was driving it jumped back up to normal stayed that way for about 15-20 miles then dropped again so im kinda puzzled