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Home >> Jeep >> 2008 >> Commander Base, 3.7 K, RWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 3 (4.7L Engine (Service Information)) >> Lubrication >> Diagnosis And Testing >> Engine Oil Pressure

Engine Oil Pressure

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Fig 1: Locating Oil Pressure Sending Unit, Connector & Oil Filter
GC0003856Courtesy of CHRYSLER LLC
1 - BELT
2 - OIL PRESSURE SENSOR
3 - OIL FILTER
4 - ELEC. CONNECTOR
  1. Remove oil pressure sending unit. See Fig 1 and install gauge assembly C-3292.
  2. Run engine until thermostat opens.
  3. Oil Pressure:
    1. Curb Idle-25 Kpa (4 psi) minimum
    2. 3000 rpm-170 - 550 KPa (25 - 80 psi)
  4. If oil pressure is 0 at idle, shut off engine. Check for a clogged oil pick-up screen or a pressure relief valve stuck open.