capnjim1

Great info. Thanks

I appreciate all the good advice! My battery cables probably are due a good cleaning & I'll do that tomorrow. I'm a newbie about diesel Dodges but I love the truck, still trying to find out about the go fast/pulling goodies it's supposed to have. The guy I bought it from said it had 150HP injectors, 100gph fuel pump with 1/2" fuel line, turbo back 4" straight exhaust, after market air filter, posi traction front & rear, & a built auto trans with kelvar clutches, billet converter, etc., & an Edge programmer. It's a jacked quad cab dually with big ole tires. I've got a lot to learn yet. Thanks again

Thanks Haggar & Mopar1973Man for the info. So it's normal & nothing to worry about. Didn"t want to have to buy an alternator. Appreciate the responses! Checked Google about the grid heaters & what they do. Does this mean my Dodge diesel does not have glow plugs?

I have a '02 SLT Laramie Ram 3500 dually with 5.9L 24V tubo engine and an odd voltage reading problem. When I start the engine the volt meter rises slowly to a little over 14 volts & then slowly falls back down to 11 - 12 volts before rising again to 14 volts. If I have the headlights on, they dim as the volts fall & brighten up as the volt reading rises. It does this several times and usually stabilizes when the engine reaches operating temps. Is this something I should be concerned about or is this normal? What could cause this?