Checking VVT Oil Pressure

This test can be used to help diagnose VVT faults.

Fig 1: OIL PRESSURE SENSOR

Courtesy of CHRYSLER LLC

1. Disconnect and remove oil pressure sensor (1).
   Fig 2: OIL PRESSURE GAUGE

   Courtesy of CHRYSLER 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 (1).
3. Install oil pressure gauge (2).
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 Engine/Lubrication/PAN, Oil - Removal .
7. Remove oil pressure relief valve and inspect, if damaged replace pressure relief valve. See Engine/Lubrication/VALVE, Oil Pressure Relief - Removal .
8. If pressure relief valve is ok, replace oil pump assembly. See Engine/Lubrication/PUMP, Engine Oil - Removal .
   Fig 3: OIL PRESSURE GAUGE

   Courtesy of CHRYSLER LLC
9. After test is complete, remove test gauge (2) and fitting (1).
10. Install oil pressure sensor and electrical connector.