I'm having a problem with my charging system and can't figure out what it is. Sitting still the car charges fine -- 13.5-14 volts at any RPM. As soon as the car starts moving the charging system starts to jump around anywhere fromm 13.5 - 8 volts. As far as I can tell the belt is not slipping (at least not when the car is still at anywhere from idle to 5000 RPM), the alternator and voltage regulator have been tested and are fine. Ground straps have been checked and cleaned. It is not the gauge, lights dim when voltage goes down. The only other thing that appears to be wrong is the fan fail. It comes on when needed but doesn't turn back off until the car is turned off. Related??? The alternator is a 105 amp GM and has been working great for months (until after the problem with the fan fail started). Please HELP!!!!! John Poland 05935 To address comments privately to the moderating team, please address: moderators@xxxxxxxxxxx For more info on the list, tech articles, cars for sale see www.dmcnews.com To search the archives or view files, log in at http://groups.yahoo.com/group/dmcnews Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/dmcnews/ <*> To unsubscribe from this group, send an email to: dmcnews-unsubscribe@xxxxxxxxxxxxxxx <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/