Audi 80/Avant (B4)

Audi 80/Avant
The description
System of release of the fulfilled gases
Cooling system
Fuel tank and the fuel pump
The air filter and intake channels
- Injection system
    System of injection Mono-Motronic
    System of injection Digifant
   - System of injection KE-III-Jetronic
      Basic elements
      Operating procedure
      Malfunctions and independent diagnostics
      Independent repair
      Visual check
      Check of separate elements
      Search of malfunctions
      Removal of components
      Check of a mode of idling and the analysis of exhaust gases
      The list of malfunctions
    Systems of injection MPI and MPFI
Transmission and transmission
Suspension bracket and steering
Brake system
Antiblocking system of brakes
Wheels and tyres
body electrosystem
Ignition system
Signalling devices
Devices and auxiliary devices
Heating and ventilation
Body elements
Search of malfunctions

Independent repair

Unfortunately, numerous checks of system of injection cannot be spent in house conditions in the absence of necessary instrumentations. However the certain sphere of action nevertheless remains.

Operations procedure

The management block cannot be checked up house means. Practice shows also that from this party of a malfunction trap extremely seldom. Bring gauges, switches and connections of wires is much more often. Therefore in the presence of a malfunction it is necessary to operate as follows:


  1. Check up, whether the ignition system is perfectly in order.
  2. Check up supply by fuel.
  3. Spend visual check of elements of system of injection (the following section see).
  4. If thus malfunction has not been found, see the list of malfunctions in the end of the head. Or check up in a workshop the store of malfunctions. Thus find out a possible source of malfunctions, check up a suspicious detail under the control scheme.