THERMOSTAT REMOVAL/INSTALLATION [MZ-CD 1.6 (Y6)]

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Warning

•  Never remove the cooling system cap or loosen the radiator drain plug while the engine is running, or when the engine and radiator are hot. Scalding engine coolant and steam may shoot out and cause serious injury. It may also damage the engine and cooling system.

•  Turn off the engine and wait until it is cool. Even then, be very careful when removing the cap. Wrap a thick cloth around it and slowly turn it counterclockwise 2.5 turns. Step back while the pressure escapes.

•  When you are sure all the pressure is gone, turn the cap using the cloth, and remove it.

1.  Remove the battery. (See BATTERY REMOVAL/INSTALLATION [MZ-CD 1.6 (Y6)].)

2.  Remove the battery tray and PCM component as a single unit. (See PCM REMOVAL/INSTALLATION [MZ-CD 1.6 (Y6)].)

3.  Remove the engine cover. (See ENGINE COVER REMOVAL/INSTALLATION [MZ-CD 1.6 (Y6)].)

4.  Remove the fuel filter protector. (See FUEL FILTER REMOVAL/INSTALLATION [MZ-CD 1.6 (Y6)].)

5.  Set the fuel filter out of the way. (See FUEL FILTER REMOVAL/INSTALLATION [MZ-CD 1.6 (Y6)].)

6.  Drain the engine coolant. (See ENGINE COOLANT REPLACEMENT [MZ-CD 1.6 (Y6)].)

7.  Remove in the order indicated in the table.

8.  Install in the reverse order of removal.

9.  Refill the engine coolant. (See ENGINE COOLANT REPLACEMENT [MZ-CD 1.6 (Y6)].)

10.  Inspect for engine coolant leakage. (See ENGINE COOLANT LEAKAGE INSPECTION [MZ-CD 1.6 (Y6)].)

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1	Coolant reserve tank hose (See Coolant Reserve Tank Hose Removal Note.) (See Coolant Reserve Tank Hose Installation Note.)
2	Upper radiator hose
3	Heater hose
4	ECT sensor connector
5	Bypass hose (See Bypass Hose Removal Note .)
6	ECT sensor retaining clip
7	ECT sensor
8	O-ring
9	Thermostat housing (See Thermostat Housing Installation Note.)
10	O-ring

Coolant Reserve Tank Hose Removal Note

1.  Perform the following steps to disconnect the coolant reserve tank hose.

(1)  Press the retainer tabs in the directions of the arrows shown in the figure on both the left and right sides of the retainer.

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(2)  Pull the hose in the direction shown in the figure with the retainer tabs pressed, and disconnect it.

Bypass Hose Removal Note

1.   Press and release the locking tang.

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2.   Disconnect the bypass hose.

Thermostat Housing Installation Note

1.  Tighten the thermostat housing bolts in two steps.

Coolant Reserve Tank Hose Installation Note

1.  Perform the following steps to connect the coolant reserve tank hose.

(1)  Insert the coolant reserve tank hose with the retainer depression pointed to the vehicle left.

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(2)  Lightly pull and push the coolant reserve tank hose a few times by hand, and then verify that it is connected securely.