lance9386

Thanks for the explanation! That is good to know.

Thanks guys. I did RTFM... but.. I have never seen a vehicle unable to maintain 14.4V while running unless there was a huge draw on the electrical system. I find that at idle is mostly when this happens. At night with the headlights on it stays right above 14, where it should be. I just think that is very strange, but apparently it is by design.

Why is voltage dipping well below 14 when the truck is running?? It's intermittent, it will go back up to normal at times..