Diagnosis And Testing-VVT Oil Pressure

This test can be used to help diagnose VVT faults.

Fig 1: Oil Pressure Sensor

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1. Disconnect and remove oil pressure sensor (1).
   Fig 2: Checking Engine Oil Pressure

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   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 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. check for pressure relief valve stuck open, a clogged oil pick-up screen.
6. Remove oil pan and inspect for debris. See REMOVAL .
7. Remove oil pressure relief valve, and inspect. If damaged replace pressure relief valve. See REMOVAL 
8. If pressure relief valve is okay, replace balance shaft module assembly. See REMOVAL .
   Fig 3: Checking Engine Oil Pressure

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9. After test is complete, remove test gauge (1) and fitting (2).
   Fig 4: Oil Pressure Sensor

   Courtesy of CHRYSLER LLC
10. Install oil pressure sensor and electrical connector.