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

Removal and Installation

1. Thermostat


1. Thermostat

2. O-ring

3. Engine coolant inlet

4. Water control valve

5. Gasket

6. Engine coolant outlet

7. Copper washer

8. Engine coolant temperature sensor

9. Heater pipe

A. To electric throttle control

B. To oil cooler

C. To heater

D. To heater

E. To electric throttle control

F. To oil cooler

WARNING:


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 the engine is cold.

1. Drain engine coolant from the radiator. Refer to CO-12, "Changing Engine Coolant".

2. Remove the air duct. Refer to EM-25, "Removal and Installation".

3. Remove radiator lower hose from the engine coolant inlet side.

4. Remove engine coolant inlet and thermostat.

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 the engine coolant temperature sensor.

Use Genuine RTV Silicone Sealant or equivalent. Refer to GI-15, "Recommended Chemical Products and Sealants".

• Install the thermostat with the whole circumference of the flange part fitting securely inside the rubber ring.

• Install the thermostat with the jiggle valve facing upwards. The position deviation may be within the range of ±10°.

• If necessary, to install the heater pipe, first apply a mild detergent to the O-ring and then quickly insert the pipe into the housing.

Water control valve


    Water pump
    Removal and Installation 1. Water pump 2. Gaskets 3. Water pump housing 4. Water pipe 5. O-ring WARNING: Never remove the radiator cap when the engine is hot. Serious burns could occur from ...

    Water control valve
    Removal and Installation 1. Thermostat 2. O-ring 3. Engine coolant inlet 4. Water control valve 5. Gasket 6. Engine coolant outlet 7. Copper washer 8. Engine coolant temperature sensor 9. H ...

    Other materials:

    BCM 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 BCM for damage, bend and loose connection (unit side and connector side). Is the inspec ...

    Vents
    Side Adjust air flow direction by moving the vent slides. Open or close the vents by using the dial. Move the dial toward the to open the vents or toward the to close them. Center Rear ...

    Terminology
    SAE J1930 Terminology List All emission related terms used in this publication in accordance with SAE J1930 are listed. Accordingly, new terms, new acronyms/abbreviations and old terms are listed in the following chart. ***: Not applicable ...