I’ve tried jumping it and it runs strong but won’t run by itself or move fuel or pressure to the fuel rail when jumped what do I do

 

I’ve run into this a few times at my shop, ive just run a jumper wire to a keyed on vacant fuse point in fuse block, done it in Durango’s, dakotas, and rams, same thing, ram single jumper wire, but I wire in correctly to fuse block, I don’t splice it, everything soldered and shrink wrapped

 

So wait... you say it won't even push fuel to the rail when jumped? That is a confusing sentence...

 

it has a non replaceable filter inside it. it could be clogged. put a hose on the output and pour gas into the hose and with an air hose, blower the fuel lightly in and out .
see if the fuel comes out dirty from the filter...
mine in picture was clogged from charcoal canister