Section 140 (2.7L): Lubrication: Operation
WARNING: This page is about a different car, the 2003 Dodge Intrepid, 2003 Chrysler Intrepid, and 2003 Chrysler Concorde. However, it is still accessible from the selected car via links, so may be relevant.
Oil from the oil pan is pumped by a gerotor type oil pump directly coupled to the crankshaft (Fig 1). Oil pressure is controlled by a relief valve mounted inside the oil pump housing. See (Fig 1-Fig 6 ) for engine oil lubrication circuits.