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Home >> Jeep >> 2008 >> Liberty Limited, 4WD, Part Time >> Repair and Diagnosis >> Engine Mechanical >> Fuel System >> Fuel Delivery - 2.8L Diesel >> Sensor-Fuel Pressure >> Installation >> Fuel Pressure Sensor

Fuel Pressure Sensor

WARNING: Diesel fuel is under extreme pressure in the high pressure side of the fuel injection system between the fuel injectors and the high pressure fuel pump. This may be as high as 1600 bar (23,200 psi.). Use extreme caution when inspecting for leaks in the high pressure side of the fuel injection system. Fuel under this amount of pressure can penetrate skin causing personal injury or death. Inspect for high pressure fuel leaks with a sheet of cardboard. Wear safety goggles and adequate protective clothing when servicing the high pressure side of the fuel system.
Fig 1: FUEL RAIL - 2.8L DIESEL
GC0062744Courtesy of CHRYSLER LLC
  1. If reusing an existing fuel pressure sensor, install a new fuel pressure sensor sealing ring.
  2. Lubricate the fuel pressure sensor threads and sealing ring with clean diesel fuel.
  3. Install fuel pressure sensor (1) in fuel rail (2). Position the fuel rail pressure sensor so the harness connector is not stretched or under tension. Tighten sensor to 100 N.m (73 ft. lbs.).
  4. Connect fuel pressure sensor electrical connector.
  5. Install engine cover.
  6. Connect negative battery cable.