### Thermostat

#### REMOVAL & INSTALLATION

Fig. 1: Thermostat location — CA series engines

Fig. 2: Always install the thermostat with the spring facing ``down'' and jiggle valve facing ``up''

Fig. 3: Thermostat location — Z series engine

Fig. 4: Thermostat and housing assembly — VG30E series engine

NOTE: On 200SX V6 engine it may be necessary to remove radiator shroud, coolant fan assembly and water suction pipe retaining bolts to gain access to the thermostat housing.

1. Drain the engine coolant into a clean container so that the level is below the thermostat housing.
2. Disconnect the upper radiator hose at the water outlet.
3. Loosen the two securing nuts and remove the water outlet, gasket, and the thermostat from the thermostat housing.

   To install:

4. Install the thermostat to the engine, using a new gasket with sealer and with the thermostat spring toward the inside of the engine.
5. Reconnect the upper radiator hose.
6. Refill and bleed the cooling system. Refer to Section 1 for Drain And Refill procedures and illustrations if necessary. Make sure to let the engine reach normal operating temperature then check coolant for the correct level.