1994 Chrysler Concorde Fuel Starving

My 94 Concorde has periods of fuel starvation where the car struggles to hold highway speed. If I stop and turn off the mortor for a few minutes, usually the car then runs fine for a time. It always runs fine when I first start it up. I suspected I got contamination in my tank and recently changed the fuel filter and got blackish colored fuel out of the inlet side of the old filter. The car ran good for a week or so and now the problem has returned.

Is there history of the rubber fuel line from the tank or a fuel puimp part degredating and releasing particles which would plug the gas flow.

Any thoughts would be appreciated.