Nissan Altima 2007-2012 Service Manual: Thermostat and thermostat housing

Removal and Installation

1. Gasket


1. Gasket

2. Thermostat assembly

WARNING: Never remove the radiator cap when the engine is hot. Serious burns could occur from high pressure coolant escaping from the radiator.

REMOVAL

CAUTION: Perform when engine is cool.

1. Drain engine coolant from the radiator. Refer to CO-35, "Changing Engine Coolant".

2. Remove drive belts. Refer to EM-121, "Removal and Installation".

3. Remove water drain plug on water pump side of the engine. Refer to EM-206, "Disassembly and Assembly".

4. Disconnect lower radiator hose.

5. Remove engine coolant inlet and thermostat assembly.

• Do not disassemble engine coolant inlet and thermostat.

Replace them as a unit, if necessary.

INSPECTION AFTER REMOVAL


INSPECTION AFTER REMOVAL

• Place a thread so that it is caught in the valves of the thermostat.

Immerse fully in a container filled with water. Heat while stirring.

• The valve opening temperature is the temperature at which the valve opens and the falls from the thread.

• Continue heating. Check the full-open lift amount.

NOTE: The full-open lift amount standard temperature for the thermostat is the reference value.

• After checking the full-open lift amount, lower the water temperature and check the valve closing temperature.


INSTALLATION


INSTALLATION

Installation is in the reverse order of removal.

• Install thermostat with jiggle valve facing upward.

• After installation refill engine coolant and check for leaks. Refer to CO-35, "Changing Engine Coolant" and CO-34, "System Inspection".

CAUTION: Do not spill coolant in engine compartment. Use a shop cloth to absorb coolant.

Water outlet and water piping


    Water pump
    Removal and Installation 1. Water pump 2. O-rings WARNING: Never remove the radiator cap when the engine is hot. Serious burns could occur from high pressure coolant escaping from the radiato ...

    Water outlet and water piping
    Removal and Installation 1. Water outlet 2. Gasket 3. O-ring 4. Heater pipe 5. Water connector 6. Water bypass pipe 7. Engine coolant temperature sensor 8. Washer A. To electric throttle co ...

    Other materials:

    DLC branch line circuit
    Diagnosis Procedure INSPECTION PROCEDURE 1.CHECK CONNECTOR 1. Turn the ignition switch OFF. 2. Disconnect the battery cable from the negative terminal. 3. Check the terminals and connectors of the data link connector for damage, bend and loose connection (connector side and harness side) ...

    Interior light
    1 The interior light can be turned ON regardless of door position. The light will go off after a period of time unless the ignition switch is placed in the ON position when any door is opened. 2 The interior lights can be set to operate when the doors are opened. To turn off the interi ...

    Off-road recovery
    If the right side or left side wheels unintentionally leave the road surface, maintain control of the vehicle by following the procedure below. Please note that this procedure is only a general guide. The vehicle must be driven as appropriate based on the conditions of the vehicle, road and t ...