Audi A4

since 1994 release

Manual of the car

Audi A4
+ Running gear
+ Regular servicing
+ Engines
+ Turbo-supercharging
+ System of an exhaust
+ Cooling system
+ Fuel tank and fuel pump
+ Air filter and channels of absorption
- System of injection
   - System of injection Motronic
      The major knots
      So the system of injection Motronic functions
      Violations in work and self-diagnostics
      The self-help at injection
      Visual control
      Search of malfunctions in separate knots
      Check of idling and exhaust gases
      Check of exhaust gases (AU)
      Cable of a butterfly valve
      The help at malfunctions
   + System of injection of MPI and MPFI
+ Coupling
+ Transmission and main transfer
+ Suspension bracket of wheels and steering
+ Brakes
+ Wheels and tires
+ Electrotechnical equipment
+ System of ignition
+ Lighting
+ Alarm equipment
+ Tools and devices
+ Heating and ventilation
+ Body details
+ Salon
Search of malfunctions
Technical characteristics


Check of idling and exhaust gases

At system of ignition/injection Motronic adjusting works are not carried out as this self-training system. It means that the control unit corrects if it is necessary, idling speed. For turns of idling the following control sizes work (check conditions: the engine is heated-up, all consumers of the electric power are disconnected, and the moment of ignition is determined correctly):

Idling speed: 820–900 rpm.

Contents WITH cannot be measured in exhaust gases in front of the catalytic converter. Therefore recheck is possible only by means of the device for reading of the computer.