Thermostat and Water Control Valve

WARNING: This page is about a different car, the 2004 Nissan Sentra. However, it is still accessible from the selected car via links, so may be relevant.

Install the thermostat and water control valve with the whole circumference of each flange fitting securely inside the rubber ring.

Fig 1: Installing Thermostat
Courtesy of NISSAN MOTOR CO., U.S.A.
Install the thermostat with the jiggle valve facing upwards. (The position deviation may be within the range of +/-10°.)
Install the water control valve with the up-mark facing up and the frame center part facing upwards. The position deviation may be within the range of +/-10° of vertical.

Fig 2: Installing Thermostat With Jiggle Valve Facing Upward
Courtesy of NISSAN MOTOR CO., U.S.A.