Vehicle cooling, heating and ventilation system Mazda 626 (3rd and 4th gen)

Cooling and Heating Specifications
The pressure at which the radiator cap opens - 0.9±0.1 bar Filling volume of coolant Models 1.6 l - 6.9 l Models 2.0 l - 7.2 l Thermostat opens at -88°C Radiator cooling...

General description of the cooling and heating system
The cooling system consists of a radiator, a water pump driven by the engine, and a thermostat that regulates the circulation of the coolant. The fan is driven by an...

Antifreeze — general description
Warning: Coolant containing antifreeze is poisonous. Keep liquid out of reach of children and pets. Never leave spilled coolant on the garage floor or on the ground -...

Thermostat — replacement
Thermostat mounting details 1. Upper radiator hose; 2. Thermostat cover; 3. Gasket; 4. Thermostat Warning: The engine must be completely cool before starting this...

Thermostat — check operation
1. It is best to check the operation of the thermostat by removing it from the engine. If the thermostat is suspected to be defective, it is recommended to replace it....

Radiator — removal, maintenance and installation
3 Radiator mounting parts 1. Upper radiator hose; 2. Bottom hose; 3. Fan cover; 4. Radiator Warning: The engine must be completely cool before starting this procedure....

Fan — removal and installation
Warning: The engine must be completely cool before starting this procedure. Be sure to disconnect the negative battery cable before working near the fan. 1. Remove the...

Electric fan and related components — description, inspection and replacement of components
Cooling fan circuit A - Fan motor; B - Fan connector; C - Relay; D - Thermal switch; E - Ignition switch Description 1. The system consists of a fan motor, an impeller...

Water pump — check operation
1. Water pump failure can cause overheating and serious engine damage. 2. There are three ways to check the operation of the water pump without removing the pump from...

Water pump — removal and installation
Water pump mounting details 1. Drive belt; 2. Top cover of the toothed drive belt; 4. Crankshaft pulley; 5. Bottom cover of the toothed drive belt; 6. Intermediate...

Heater blower motor — removal and installation
1. Disconnect the negative battery cable. Remove the trim from under the dashboard on the passenger side to access the fan motor. 2. Disconnect the electrical...

Air conditioning system — service
Warning: The air conditioning system is under high pressure. Do not disconnect system components without first depressurizing the system. Depressurization must be...