This is normal. Some models of the Ranger have two fuel pumps. (The in-tank pump supplies fuel to the second pump (along the frame rail). The second pump increases the pressure to the normal level. I've ssen these where the in-tank pump can't supply enough fuel to the second pump and therefore the pressure is low. Also, consider a clogged fuel filter.
Connect a fuel pressure gauge to the fuel rail underhood to check you fuel pressure. (Low fuel pressure can cause sputtering - along with many other things, but this is a good place to start). Normal fuel pressure is around 40 psi.
Post your results here so that I can help further if necessary.
Wednesday, July 24th, 2013 AT 7:58 AM