+1

take it to an autozone, advance, or somewhere else like that and get your battery load tested, they'll do it for free. Check that your terminals are making good connection to the battery post and the wires (where the terminals clamp on) for corrosion or looseness

 

THIS is the important piece of information, if you have good power and it runs fine at higher RPMs chances are that your fuel pump is fine, write it off for now, if it is possible for it to idle chances are that the battery is fine also, i wouldnt look there just yet, it will run so that means you have both fuel and spark. (however there is no choke on these (or any other) modern engines)

the most common cause of this specific problem (foot on gas to start, and hold throttle open for a few minutes before it will idle on its own) is a bad IAC valve/motor, it controls the airflow through the throttle body on idle and when it gets old/worn out it doesnt adjust fas enough, holding the throttle open on a cold start works around this issue, and holding it open until it catches up, this also warms the engine up and makes it easier to keep running so the IAC works less (yes this is being explained in VERY basic terms).

start by replacing this and resetting the PCM and get back to us, it is located on the back of the tb and held in by two torx head bolts (sorry idk what size torx they are)

 

I believe the iac is held on by t20 torx

 

Yeah its either 20 or 25...but thats a good catch shrp. That is a good place to start diagnosing the problem.

 

I would have said the same thing but the op said its happening when they hit 1/8th of a tank

 

Maybe consider lookin at somethin cheaper...like a fuel filter. They often go overlooked and it could be clogging and maybe the fuel.pressure drops a little when it gets to a low fuel level?

 

Lets start with the basic's. Do you have spark at the spark plugs? Have you check fuel pump pressure? And if you have, what was the pressure reading. The fuel filter is in the fuel tank, so you would need to remove the fuel pump to replace the filter. If you spray starting fluid into the throttle and try starting the engine, Does it start and run? If it does, I would add more fuel to the tank. The float maybe bad causing you to think you have fuel in the tank, when it really empty.

 

I'm thinking a bad fuel pump because of this:

There should not be air in the fuel line and there should be about 50+psi of fuel in that line.

 

I'm guessing you have a plastic gas tank?

One trick you could try when it acts up is take a hammer and beat the bottom side of the gas tank about where the fuel pump is while someone is cranking your D

I know that sounds crazy but I've done it to numerous of my friends dodges so they could get their truck home. Hell I even did it to my old 97 RAM for a week after the fuel pump went out to get back n forth to work lol

Now if it starts while u do this then 99% of the time it means a bad pump.

 

Well the fuel cell is actually Polyurethane, but close enough to call it plastic....LOL


Anyway, all the Durango's came with Polyurethane fuel tanks.