Oil Pressure
WARNING: This page does not describe the selected car, but rather 9 other vehicles, including the 2003 Ford Pickup, 2003 Ford F550 Super Duty, 2003 Ford F450 Super Duty, 2003 Ford Excursion, and 2003 Ford Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.
Engine oil pressure should be 40-70 psi (2.8-4.9 kg/cm2 ) at 3300 RPM, with engine at normal operating temperature.