Mazda 626

1991-1998 of release

Repair and operation of the car

Mazda 626

+ 1. Maintenance instruction
+ 2. Maintenance
+ 3. Engines
+ 4. Heating and ventilation
+ 5. Fuel system
- 6. Exhaust system
   + 6.1. Exhaust system
   - 6.2. Systems of decrease in toxicity of exhausts and management of operation of the engine
      6.2.1. Introduction
      6.2.2. System of self-diagnostics and codes of malfunction
      6.2.3. Central control unit
      6.2.4. Sensor of provision of a butterfly valve
      6.2.5. Air stream sensor
      6.2.6. The sensor of temperature of the arriving air
      6.2.7. Sensor of temperature of cooling liquid
      6.2.8. Sensor of provision of a bent shaft
      6.2.9. Sensor of position of the camshaft
      6.2.10. Switch of system of hydrostrengthening of steering
      6.2.11. Oxygen sensor
      6.2.12. Sensor of detonation combustion of fuel
      6.2.13. Speed sensor
      6.2.14. Air valve
      6.2.15. System of additional air supply on low turns
      6.2.16. System of ventilation of a case
      6.2.17. System of recirculation of exhaust gases
      6.2.18. System of collecting vapors of fuel
      6.2.19. Switch of fires of a stoplight
      6.2.20. Catalytic converter
+ 7. Transmissions
+ 8. Coupling and half shafts
+ 9. Brake system
+ 10. Running gear
+ 11. Body
+ 12. Electric equipment
+ 13. Electrical circuitries
+ 14. Useful tips

6.2.14. Air valve

GENERAL INFORMATION

Arrangement of the air valve of system of idling (model with the 4-cylinder engine)

Arrangement of the air valve of system of idling (model with the 6-cylinder engine)

The air valve controls air supply in the engine idling, regulating, thus, idling speed.

Check

PERFORMANCE ORDER

1. Connect a tachometer. Start the engine and lift speed to 3000. Wait until to join the fan of cooling of a radiator and measure the speed of operation of the engine idling (all electric equipment of the car has to be switched off). If idling speed too low, disconnect the socket of connection of the air valve. Speed of operation of the engine has to begin to fluctuate after a detachment of the socket of connection of the valve. If is not present probably the valve is faulty.

2. Measure resistance between valve plugs. It has to make 7,7–9,3 Ohms (models with the four-cylinder engine), 10,7–12,3 Ohms (models with the six-cylinder engine of 1993-1997 of release) or 8,7–10,5 Ohms (models with the six-cylinder engine of 1998 of release). Replace the valve if it is necessary.

Replacement

PERFORMANCE ORDER

1. Disconnect the socket of connection of the valve, turn off fixing screws and remove the valve.

2. Installation is carried out upside-down removals. Replace a sealing ring of the valve.

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