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Home >> Ford >> 2004 >> Explorer 4.0 K, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1399 (Engine - 6.0L (99P F450/550) Diesel -- F250-F550 Super Duty) >> Diagnosis And Testing >> Oil Pressure Test >> Inspection and Verification

Inspection and Verification

WARNING: This page is about a different car, the 2006 Ford Pickup, 2006 Ford F550 Super Duty, 2006 Ford F450 Super Duty, and 2006 Ford Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.
  1. Verify the customer concern.
  2. Visually inspect for obvious signs of damage.
  3. If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to the next step.
  4. If the concern is not visually evident, check the base oil pressure.
  5. Remove the engine oil temperature (EOT) sensor. Install the special tool.
    • Tighten to 18 Nm (13 lb-ft).
      Fig 1: Locating Engine Oil Temperature Sensor
      G04648321Courtesy of FORD MOTOR CO.
  6. CAUTION: Use a backup wrench on the special tool when installing the oil pressure gauge or engine damage can occur.
  7. Install a commercially available oil pressure gauge and check the base oil pressure. The minimum engine oil pressure specifications are 82.7 kPa (12 psi) at 700 RPM, 165.5 kPa (24 psi) at 1,200 RPM and 310.3 kPa (45 psi) at 1,800 RPM with the engine at operating temperature.
  8. Remove the oil pressure gauge and special tool. Install the EOT sensor.
    • Tighten to 18 Nm (13 lb-ft).
  9. If the concern is not evident, verify the symptom. GO to SYMPTOM CHART .