Seems to be starving for fuel

TJ76

I have a 2008 Infiniti QX56. It drives fine going 0-55 mph but once I try to accelerate to a higher speed and in the highway when trying to maintain a speed it wants to spit and sputter. I can pull over and turn the engine off for a few mins and start it back and the problem relieves itself for a short period of time. Even parked in neutral I can floor the pedal and just spits and sputters and sounds like I am pressing the pedal and letting off. I don’t know if I should try changing the fuel pump or something else. There are no check engine lights on.

Ahmadski03

The Nissan Armada and the INF QX56 SUV's were known for it, especially if you have high miles on it. I would try different things but nothing over $500. After that, it's save up and time to consider a replacement. Good luck ~