Mazda 3 Service Manual: Thermostat Removal/Installation [Mzr 2.0, Mzr 2.5]

Mazda 3 Service Manual / Engine / Cooling / Thermostat Removal/Installation [Mzr 2.0, Mzr 2.5]

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 cover..

2. Disconnect the negative battery cable..

3. Remove the plug hole plate..

4. Remove the aerodynamic under cover No.2 and splash shield as a single unit..

5. Drain the engine coolant..

6. Remove the generator drive belt with the A/C drive belt still installed and set it out of the way. (MZR 2.0).

7. Remove the drive belt. (MZR 2.5).

8. Remove the drive belt auto tensioner. (MZR 2.0).

9. Remove the idler pulley. (MZR 2.5).

10. Remove in the order indicated in the table.

11. Install in the reverse order of removal.

12. Refill the engine coolant..

13. Inspect for engine coolant leakage..

1	Water hose
2	Lower radiator hose
3	Thermostat component
4	Gasket

Thermostat Inspection [Mzr 2.0, Mzr 2.5]

1. Remove the thermostat.. 2. Visually check that the thermostat valve is closed. 3. Place the thermostat in water. WARNING: During inspection, the thermostat and water are extremely hot ...

Emissions

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Other materials:

Towing
Proper lifting and towing are necessary to prevent damage to the vehicle. Government and local laws must be followed. A towed vehicle usually should have its drive wheel (front wheels) off the ground. If excessive damage or other conditions prevent this, use wheel dollies. ...

Front Oil Seal Replacement [Mzr 2.0, Mzr 2.5]
1. Remove the battery cover.. 2. Disconnect the negative battery cable.. 3. Remove the plug hole plate.. 4. Disconnect the wiring harness. 5. Remove the ignition coils.. 6. Remove the spark plugs.. 7. Remove the ventilation hose. 8. Remove the oil level gauge. 9. Remove the cylinder ...

Error Indications (Type A)
If you see an error indication on the display, find the cause in the chart. If you cannot clear the error indication, take the vehicle to an Authorized Mazda Dealer. Indication Cause Solution CHECK USB USB device malfunction Verify that the content ...