2005 nissan armada replaced fuel pump after symptoms lead me to believe so after replaced it still does similar things it shuts off at random like you turned the key off and then when it does start it runs like **** spits and sputters then ocasionally it will fire up and run for 10-15 min

SOURCE: I have a 96 nissan sentra that starts up just

check the coil packs if there geting hot they do that to they just quit firing

SOURCE: My 2005 nissan xterra will not start it has shut

The issue is your Mass Air Flow Sensor (MAF). This can be due to an overused/very dirty air filter, or even an aftermarket air filter (that uses oil on the filter element), or diriving in very dusty/dirty areas.

2 fixes.
1) Get MAF cleaner of Electrical connection cleaner in a spray can from your local auto parts store. Locate the MAF, which is on the intake tube, drivers side, just after the air filter. It is held down by 2 hex screws. remove it (try not to touch the metal with your hands, and DO NOT touch the little sensors that look like wire resistors you will see inside, if you touch them, it will no longer work!), spray it VERY WELL with the cleaner (use the whole can if you feel the need) let dry in ambient air for at least 10 minutes, re-install and like magic, your car will start & run, probably better than before you had the issue. The CATCH IS, this can end up being a short term fix, may happen again after 10 miles, or 20,000 miles, but it will more than likely happen again.
2) Replace the MAF with a new unit, or have your vehicle serviced under warranty, and have the dealership replace this part.

SOURCE: Where is the fuel filter located on a 2005 Nissan

The fuel filter is located inside the fuel pump on a 2005 nissan altima. The fuel pump is under the back seat. You must remove the bottom cushion on the driver side. Before removing the fuel pump you must remove the negative battery cable and relieve fuel pressure. trouble with filters hesitation in starts could be some bogging and when acceleration poor fuel output but it depends on what ur car is doing?some of these same symptoms could be duel to idle air conrol valve controls idle and hesitation in acceleration

Barry N Melissa Spring

• 230 Answers
• Posted on Mar 31, 2010

SOURCE: HOW TO REPLACE A FUEL PUMP FOR A NISSAN XTERRA

Removal & Installation

1. Before servicing the vehicle, refer to the precautions in the beginning of this section.
2. Relieve the fuel system pressure.
3. Drain the fuel tank.
4. Remove or disconnect the following:
   
   Negative battery cable Fuel pump module harness connectors Filler hose shield Fuel pressure and return lines Filler hose Vent hose Evaporative Emissions (EVAP) hose Fuel tank skid plate Fuel tank Fuel level sender Fuel pump
   

1. Install or connect the following:
   
   Fuel pump Fuel level sender. Tighten the screws to 17-23 inch lbs. (2.0-2.5 Nm). Fuel tank. Tighten the bolts to 27-36 ft. lbs. (37-49 Nm). Fuel tank skid plate. Tighten the bolts to 27-36 ft. lbs. (37-49 Nm). EVAP hose Vent hose Filler hose Fuel pressure and return lines Filler hose shield Fuel pump module harness connectors Negative battery cable
   
2. Fill the fuel tank.
3. Start the engine and check for leaks.
   
   

SOURCE: 2005 nissan armada oil gauge

no,,, fluctuations mean =low oil pressure,oil level low,oil old or too thin viscotly,oil pump loosing or not develloping the correct pressure
pressure release valve spring weakened