Cooling, heating and ventilation Mazda 626 (6)

Technical data of the cooling and ventilation system
Basic data Radiator cap outlet valve pressure - 0.93-1.23 bar Thermostat: Opening start temperature — 80.6-84.6°С Full opening temperature - 95.8°С Coolant type: 1993...

General information about the cooling and ventilation system
Engine cooling system All vehicle models covered in this manual have a closed, pressurized cooling system with two thermostatically controlled coolant circuits (pic....

Coolant — basic information
Attention! Do not allow antifreeze to come into contact with upholstery and painted surfaces of the vehicle. In case of contact, flush coolant immediately with plenty of...

Thermostat — check and replacement
Attention! Do not remove the radiator cap, drain the fluid, or disassemble the thermostat until the engine is completely cool. Examination 1. Before checking the...

Cooling fans and circuits — check and replace
Attention! To avoid injury, do not touch the fan blades with your hands, as it can start at any time! Examination 1. Models equipped with air conditioning have two fans...

Radiator and expansion tank — removal and installation
Attention! Do not start this work until the engine has cooled down. Expansion tank 1. Disconnect from a mouth of a broad tank the hose connecting it with a radiator....

Water pump — check
1. Failure of the water pump can lead to serious engine failure due to overheating. If the pump is defective, replace it with a new or remanufactured one. 2. Remove the...

Water pump — replacement
1. Disconnect the negative cable from the battery. Caution: If your vehicle's audio system is equipped with an anti-theft protection, make sure you know the unlock code...

Coolant temperature indicator sensor — check and replace
Attention! Do not start this work until the engine has completely cooled down. Examination 1. If the coolant temperature indicator on the instrument panel does not work,...

Oil heat exchanger (V-shaped engines) — removal and installation
1. The oil heat exchanger on V-engines is installed between the oil filters at its base. The cooling system fluid is pumped through the heat exchanger through two hoses....

Heater fan and circuit — check
1. If the heater fan does not work, first check all the connectors of its value - if they are loose and if there is any corrosion on the contacts. Make sure the battery...

Heater fan — removal and installation
Attention! The models described in this manual are equipped with airbags. When working in the cushion area, always turn them off ( see chapter 12 ) to avoid accidental...

Heater and air conditioning control panel — removal and installation, adjustment of cables
Attention! The models described in this manual are equipped with airbags. When working in the cushion area, always turn them off ( see chapter 12 ) to avoid accidental...

Heater Radiator — Replacement
Attention! Models described in this manual. equipped with airbags. When working in the cushion area, always turn them off ( see chapter 12 ) to avoid accidental...

Air conditioning and heating system — check and service
Air conditioning system 1. In order to make sure that the air conditioning system is fully operational, the following checks should usually be performed: A) Inspect and...

A/C Compressor Clutch Engagement Circuit — Check
1. The correct operation of the compressor clutch is the basis for the correct operation of the air conditioning system. If the system does not give cold, first check...

Receiver / dehumidifier of the air conditioning system — removal and installation
Attention! The air conditioning system is under pressure. Do not disconnect the system piping until it is discharged. The refrigerant must be properly removed and sent...

Air conditioning compressor — removal and installation
Attention! The air conditioning system is under pressure. Do not disconnect the system piping until it is discharged. The refrigerant must be properly removed and sent...

Air conditioning condenser — removal and installation
Attention! The air conditioning system is under pressure. Do not disconnect the system piping until it is discharged. The refrigerant must be properly removed and sent...

Air conditioning evaporator — removal and installation
Attention! The models described in this manual are equipped with airbags. When working in the cushion area, always turn them off ( see chapter 12 ) to avoid accidental...

Expansion nozzle (diffuser) of the air conditioning system — removal and installation
Attention! The air conditioning system is under pressure. Do not disconnect the system piping until it is discharged. The refrigerant must be properly removed and sent...