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Home >> Chrysler >> 2011 >> 300 C, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 444 (2.4L Engine (Service Information)) >> Lubrication >> Diagnosis And Testing >> Checking Engine Oil Pressure

Checking Engine Oil Pressure

WARNING: This page is about a different car, the 2013 Dodge Avenger and 2013 Chrysler 200. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:

Due to restricted access to the oil pressure switch, it is recommended to first check VVT oil pressure at the oil temperature sensor. Refer to CHECKING VVT OIL PRESSURE .

Fig 1: Remove/Install Oil Pressure Switch
GC0121496Courtesy of CHRYSLER GROUP, LLC
  1. Remove the oil pressure switch (1). Refer to SWITCH, OIL PRESSURE, REMOVAL .
    Fig 2: Oil Pressure Gauge & Adapter
    GC0121497Courtesy of CHRYSLER GROUP, LLC
    CAUTION:

    Threads in block are 1/8"-28 British Standard Pipe (BSP). Do not install a National Pipe Thread (NPT) threaded adapter, this could crack the cylinder block.

  2. Install an 1/8-28 BSP male to 1/8-27 female threaded adapter (2).
  3. Install an oil pressure gauge (1).
  4. Start engine and record oil pressure.
    CAUTION:

    If oil pressure is 0 at idle, do not perform the 3000 RPM test

  5. If oil pressure is 0 at idle, shut off engine. No oil pressure or low oil pressure at the oil pressure switch can be due to the following:
    • Pressure relief valve stuck open.
    • Clogged oil pump pick-up screen.
  6. Remove the oil pan and inspect for debris. Refer to PAN, OIL, REMOVAL .
  7. Remove the oil pressure relief valve. Refer to VALVE, OIL PRESSURE RELIEF, REMOVAL .
  8. Inspect the oil pressure relief valve. Refer to VALVE, OIL PRESSURE RELIEF, INSPECTION .
  9. If pressure relief valve is OK, replace the balance shaft module assembly. Refer to PUMP, ENGINE OIL, REMOVAL .
    Fig 3: Oil Pressure Gauge & Adapter
    GC0121497Courtesy of CHRYSLER GROUP, LLC
  10. After test is complete, remove test gauge (1) and fitting (2).
    Fig 4: Remove/Install Oil Pressure Switch
    GC0121496Courtesy of CHRYSLER GROUP, LLC
    CAUTION:

    The oil pressure switch has tapered threads, over tightening could crack the engine block.

    NOTE:

    If the oil pressure switch is removed, it must be replaced with a new  switch.

  11. Install the oil pressure switch and electrical connector. Refer to SWITCH, OIL PRESSURE, INSTALLATION .