How to check fuel pump pressure on 2005 xterra

check the fuel pressure and flow , if the pressure is low replace the pump, if the flow is low replace the fuel filter,the injectors may need some attention at that mileage.

i hope you do not have security device on the car, if you do there some security device that cut off the fuel supply and this could be your problem mostly, if the device is malfunctioning.

Think smaller and work your way up! When was the last time your changed your fuel filter? Do you have spark at the plugs?

Sure you can shot gun it and start replacing parts, and you might be right about the fuel pump if it has acted like fuel deprovation before (fuel pumps usually give some indication before they completly fail), but it is better to spend a little time troubleshooting and replace the right part!

You could pull the fuel line and see if it is pumping or not.

Yes, there is fuel pump relay, which is generally located on the passenger side kick panel. But in your case, the fuel pump relay on 2002 model Xterra is indeed located under the dash around the steering wheel, but no you don't need to remove the cover just lay in floor and you can see it, it will slide off a bracket and you can remove and replace it.
Good Luck!

Inside your fuel tank. before changing it, make sure u check the pressure and CHECK fuel pressure regulator

It's in the fuel tank, which must come off to replace it. Let me know if you would like instructions for removal.

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
   

To install:

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.
   
   

Sending unit died. can be expencive to replace since most sending units are integral with the fuel pump now. lots of labor too. Better to use the trip odometer till you can afford a day without your car and a $600.00 +labor repair bill.

is there spark and fuel pressure?.....disconnect one spark plug and put a spark tester to verify.,if there is spark,then remove the air intake hose from the throttle body and spray fuel into the throttle body,if the engine starts,then dies,you have a fuel delivery problem.if you have hit something,check the wiring to the fuel pump,which is in the fuel tank.if you have 200000km,chances are the fuel pump is no good.sometimes banging on the tank will get it to start up again.you can also disconnect the inlet to the fuel filter using what is called a line wrench .if fuel sprays out,there is pressure there.wear glasses,fuel is under quite a bit of pressure.