Check compression.
The Nissan Pathfinder fuel sensor regulates the amount of fuel pressure in the fuel injection rail. The fuel pressure is important to the fuel injectors.
The 1995 Nissan Pathfinder oil pressure sensor can be found next to the oil filter. The oil pressure sensor measures the oil pressure in the engine.
The plug or sensor above the oil filter on a 1996 Cherokee is the oil pressure sending unit. This sensor controls the oil pressure gauge.
there is no fuel injection sensor, you have a fuel pressure regulator and injectors that are controled to fire by the computer.
the sensor is located next to the oil filter on the oil filter casting.
It's a form of altimeter that adjusts the fuel flow as you climb a mountain (or the air pressure changes)
The oil pressure sensor is on the front of the engine, near the oil filter.
I saw on another forum that the oil pressure sensor is under the oil filter.
This has happened on my 97 twice- it was the fuel pressure regulator.
Try replacing your fuel filter or it could be either your EGR valve or fuel pressure regulator
This is a device that measures the pressure of the fuel that is to be delivered to the fuel injectors. This measurement is used by the engine control computer to determine how long the injectors need to be driven open to deliver a specific amount of fuel.
THE ICP SENSOR IS A SENSOR THAT READS THE PRESSURE, IN THE HIGH PRESSURE OIL SYSTEM, & SENDS VOLTAGE BACK TO THE ECM IN ORDER TO DETERMINE WHEN TO FIRE THE INJECTORS BASED ON THE VOLTAGE THAT THE ECM RECIEVES. The ICP sensor's primary function is to provide a feedback signal to indicate injection control pressure to enable the PCM to command the correct injector timing and pulse width and the correct injection control pressure for proper fuel delivery at all speed and load conditions.msc