An hour is probably max. Between the fuel pump and engine controls you will draw about 12-15 amps with no brake lights, etc. When the volts get to about 9 the engine will begin to lose spark and miss under load. You can probably get another 1\2 hour if you by-passed the coil resistor when the volts begin to get low. I wouldn't try it myself. Good luck Harold McElraft - 3354 --- In dmcnews@xxxxxxxxxxxxxxx, "daviddlasvegas" <daviddlasvegas@...> wrote: > > I'm going to try to make it the 3.5 hour drive to the shop to get my > alternator repaired. The alternator is putting out no power, so the > car is running off the battery 100%. If I am driving the car with no > accessories on, no a/c, and no lights, should the battery fully > charged last 3.5 hrs / 250 miles or am I going to get stuck? > 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/ <*> Your email settings: Individual Email | Traditional <*> To change settings online go to: http://groups.yahoo.com/group/dmcnews/join (Yahoo! ID required) <*> To change settings via email: mailto:dmcnews-digest@xxxxxxxxxxxxxxx mailto:dmcnews-fullfeatured@xxxxxxxxxxxxxxx <*> 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/