fuel pump
There are a couple of reasons why a Nissan Pathfinder could be sputtering. The sputtering can be from bad gas or a bad fuel pump.
One reason why your 1994 Nissan Altima could be sputtering at an idle is because of your spark plugs. It could also be caused by the idle sensor.
Could be in need of a tune up.
what could the problem be?
A car or a horse? Where could you buy a mustang horse? [Sorry about that]
it could mean the moter is blown or just needs a toon up
it could be the coil
Change your oil one, sputtering could also be a clogged fuel filter have your vehicle serviced
Could need a tune up or could be something in the fuel injection such as a bad injector.
check the cadallidic converter
Could be time for a tune up.
It could be the firing order is wrong