Audi A4

since 1994 of release

Repair and car operation

A4 Audi
+ Running gear
+ Regular servicing
+ Engines
+ Turbo-supercharging
+ exhaust System
+ cooling System
+ Fuel tank and fuel pump
+ Air filter and absorption channels
- Injection system
   + System of injection of Motronic
   - System of injection of MPI and MPFI
      Additional functions
      Knots of system of injection
      Adjustment with the help a lambda probe
      Violations in work and self-diagnostics
      Visual control
      Check of knots
      Dismantle of separate details
      Butterfly valve cable
      Inlet collector
      Idling adjustment
      Check of exhaust gases
      The help at malfunctions
+ Coupling
+ Transmission and main transfer
+ Suspension bracket of wheels and steering
+ Brakes
+ Wheels and tires
+ Electrotechnical equipment
+ ignition System
+ Lighting
+ Alarm equipment
+ Tools and devices
+ Heating and ventilation
+ body Details
+ Salon
Search of malfunctions
Technical characteristics


Way of action

Unfortunately, many types of checks are inaccessible to the fan in the absence of the necessary control devices. Nevertheless nevertheless there is a certain field for activity.

The control unit cannot be checked amateur means. But also in practice in this area defects arise seldom. Incomparably more often sensors, switches and connections of wires give a reason for claims.

Therefore at emergence of defect it is recommended to operate as follows:

    Whether as it should be all safety locks which are connected with injection (No. 28, 29, 32 and 34)? Be convinced that ignition as it should be. Check supply of fuel. Carry out visual check of knots of system of injection.

    If as a result of the listed checks the source of malfunctions is not found, study at the end of this chapter the section Help at malfunctions, reveal possible sources of malfunctions, check according to the instruction suspicious knot. If it did not lead to success, consider in a workshop the control unit computer within car diagnostics. But it is possible only in case the accumulator before was not disconnected. Otherwise information in a memory is completely erased.