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So my 2003 has been sitting for a while needed a power steering hose and brakes, finally got around to it, batteries where dead so I jump started it, when I took off the cables it quit running and now I have no power what so ever? IDEAS???
Yep.....
New batteries. Both of them.. Never one at at time.
Needing to jump start the truck then taking cables off of a vehicle will kill the alternator in quick time.
Your truck needs to see a minimum of 10 volts during crank to fire and to maintain running.
And....
If the batteries do not hold a minimum 12.6 volts after sitting overnight that is another indication they are bad.
If you are in 120 degree weather 12.5 volts would be ok as the hotter you get the lower the voltage will be.
Even when I hook up cables , no dome light nothing, seems weird
Even on jumper cables?
If so, I’d say you blew a main fuse or have a heavy bead cell in the battery.
I would start by disconnecting the bad batteries and hooking up a jumper box or such to the truck cables. Both sides disconnected, make sure the loose ends aren’t going to short out on something, then jump on one set of the cables. Not to start it, but just to see if the dome lights etc work again. That should lead you in a direction.
you should never, ever, let batteries sit without a Battery Tender plugged in 24/7/365
those batteries will cost you ten times, what a decent battery tender would have.
for my Excursion, and our 5.9 Cummins diesel, we have 4.5 Amp Battery Tenders on both of them.
my sister's Ford Raptor has a Solar Cell on it, I just lay it over the windshield and clip it to the battery..... that thing has a Console that draws power all the time, not a lot, but in 3 months, the battery is dead.
I'm not 100% certain this applies to the diesels because I've only had to diagnose and deal with it on gas engine trucks. But, on top of the left fender liner, inside the engine compartment, toward the firewall there may be a junction and a fusible link that supply +12VDC to the CJB (fuse panel) under the dash.. I've seen one case where the terminals corroded and all power to the truck was lost and one case where the fusible link burned up. If the pictures manage to attach, the terminal is gone, but you can see the mounting holes next to the wire with the big red piece of heat shrink tubing on it.
Not sure if this is the same connector Pikachu is referring to, same location on top of left fender. Has a square black plastic cover. They can corrode and break and sounds like that area was recently worked on.
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