FixVault

Thermostat Removal/Installation: Notes

WARNING: This page is about a different car, the 2016 Mazda MX-5 Miata. However, it is still accessible from the selected car via links, so may be relevant.
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 to the first stop. Step back while the pressure escapes.
  • When you are sure all the pressure is gone, press down on the cap using the cloth, turn it, and remove it.
CAUTION:
  • If engine coolant remaining in the engine flows out, the electrical components, wiring harnesses and connectors might get wet. Therefore, set aside the electrical components, wiring harnesses and connectors or protect them from getting wet.
  1. Disconnect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION .)
  2. Remove the air cleaner, air hose and resonance chamber No. 1 as a single unit. (See INTAKE-AIR SYSTEM REMOVAL/INSTALLATION .)
  3. Drain the engine coolant. (See ENGINE COOLANT REPLACEMENT .)
  4. Remove the exhaust manifold insulator. (See EXHAUST SYSTEM REMOVAL/INSTALLATION .)
  5. Remove in the order indicated in the table.
  6. Install in the reverse order of removal.
  7. Refill the engine coolant. (See ENGINE COOLANT REPLACEMENT .)
  8. Inspect for engine coolant leakage. (See ENGINE COOLANT LEAKAGE INSPECTION .)
    Fig 1: Thermostat Related Components With Torque Specifications
    G10951637Courtesy of MAZDA MOTORS CORP.
    COMPONENT DESCRIPTION

    1 Lower radiator hose (Thermostat cover side)
    2 Thermostat cover
    (See Thermostat Cover Removal Note .)
    3 Thermostat
    (See Thermostat Removal Note .)
    (See Thermostat Installation Note .)