Cooling and heating system Mazda 626 (3 and 4)

General information about the engine cooling system
The cooling system consists of a radiator, a water pump driven by the engine crankshaft and a thermostat. The system is filled with coolant. A fan with an electric motor...

General information about antifreeze
Caution! Avoid contact with exposed skin or vehicle paintwork. If antifreeze comes into contact with the affected areas, rinse with plenty of water. Caution! Immediately...

Thermostat — replacement and inspection
Caution! Replace the thermostat on a cold engine. In addition, when carrying out any work near the fan, to prevent it from turning on accidentally, it is necessary to...

Radiator — removal, maintenance and repair
The radiator serves to cool the liquid by the flow of air passing through the radiator core. The radiator core consists of aluminum tubes and aluminum cooling fins. To...

Radiator Fan — removal, inspection, and installation
Removal and installation For easier access, remove the ignition distributor and air cleaner intake pipe. Disconnect the contact connector from the electric motor thermal...

Radiator fan motor
When checking the wires of the electric motor power supply circuit, find the contact connector and disconnect it with a screwdriver. Figure 5.5. Wiring diagram for...

Radiator fan intermediate relay
Disconnect the connector from the thermal switch and check if the radiator fan turns on when the ignition key is turned to the "ON" position. If the fan turns on, the...

Thermal switch — checking and replacement
Drain the cooling system to a level corresponding to the lower edge of the thermostat housing. Disconnect the contact connector and remove the thermal switch. Place the...

Water Pump — checking, removing and installing
Examination A faulty water pump can cause the engine to overheat and fail (the engine is not cooled by the flow of circulating coolant). There are three ways to check...

Heater Fan Motor — removal and installation
Removal Disconnect the cable from the negative battery terminal. To gain easier access to the heater motor, remove the lower trim panel from the front passenger side...

Air conditioning system maintenance
Caution! Work on the air conditioning system must be performed by specially trained, qualified personnel. Caution! The air conditioning system is under high pressure....

Checking, removing and installing the coolant temperature sensor (since 1984)
Remove the rubber boot from the connector on the coolant temperature sensor. Start the engine and warm it up to normal operating temperature, then let it idle. Use a...

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Capella 5 (1991-1997)