This happens once the truck warms up about 2 weeks ago I went out and started the trk to warm it up just as I got to it it went dead and i had to boost it the same thing happened today. I had the battery and Alt tested on the trk at high idle it showed 13.8 volts. I have no idea where to start.
I have been having problems with the headlights and dashlights flashing on 2000 Nissan Xterra
by david1101 in Water Valley, MS on December 08, 2011
ANSWER by euromech on December 09, 2011
I think the alternator has problem anyway.The alternators has diods in it anywhere from 6 to 9 in most cases. If one of them goes out you still have some charge but DC pwer gets to electrikal system that causing flashing and even damaging the battery.