04 6.0 Power Failure - Diesel Forum

**CLARK11** · 02-28-2009, 08:52 PM

recently my truck had complete power failure while driving, and has been starting intermitenly sometimes it wont even turn over and the battery indicator light comes on and off randomly. I was told to start by replacing the Batteries I did that and it doesnt seem to have fixed the problem the battery indicator light is still on, and i havent drivin it enough yet to see if it's still having power failure issues or not. I was curious if i should move on and try and replace the alternator next? and if anyone has had these same issues.

KokDiezel · 03-04-2009, 07:55 PM

Your problem can be caused by a bad ground. Make sure the ground wire is tight at both ends...battery side and truck side. If you have a multimeter you can also test the alternator by starting the truck and running the lights and A/C. Your battery voltage should read 13-14 volts while the truck is running.