Audi A4

Since 1994 of release

Repair and car operation

Audi А4
+ Running gear
+ Regular servicing
+ Engines
+ Turbo-supercharging
+ Exhaust system
+ Cooling system
+ Fuel tank and the fuel pump
+ The air filter and channels всасывания
- Injection system
   + System of injection Motronic
   - System of injection MPI and MPFI
      Additional functions
      Knots of system of injection
      Adjustment by means of a ljambda-probe
      Infringements in work and self-diagnostics
      The self-help
      The visual control
      Check of knots
      Dismantle of separate details
      Cable throttle заслонки
      Inlet collector
      Idling adjustment
      Check of the fulfilled gases
      The help at malfunctions
+ Coupling
+ Transmission and the main transfer
+ Suspension bracket of wheels and steering
+ Brakes
+ Wheels and tyres
+ The electrotechnical equipment
+ Ignition system
+ Illumination
+ The alarm equipment
+ Tools and devices
+ Heating and ventilation
+ Body details
+ Salon
Search of malfunctions
Technical characteristics

The help at malfunctions

System of injection MPI/MPFI

Its reasons
Your help
A. The cold engine is not got or got badly 1. A defective safety lock 13, 21, 25, 27 or 28
2. The relay of the fuel pump is faulty
3. The fuel pump does not submit fuel or submits insufficient quantity
4. The regulator of pressure of fuel is faulty
5. The valve of stabilisation of idling is faulty
6. The management block is faulty
7. The signal from the gauge about number of turns of the engine does not arrive
8. In the engine additional air arrives
Check up, if it is necessary, replace
Check up gasoline presence in a fuel tank
Check up the fuel pump, measure quantity of arriving fuel
Measure pressure in a workshop
Check up
Check up in a workshop
Check up a wire on all length
Check up all hoses
V.Progretyj the engine is not got or got badly 1. Defect in a vacuum hose to a regulator of pressure of fuel
2. See And 1–4, 6 and 7
3. Негерметичны injection valves
4. The gauge of temperature of a cooling liquid is faulty
Check up a hose

Check up valves
Check up the gauge

S.Dvigatel is got, but soon again глохнет 1. See And 1 and 5
2. See In 1
3. The size WITH does not correspond to norm
4. Defect in a measuring instrument of weight of air (MPI) or in the gauge of temperature of soaked up air or in the pressure gauge in an inlet collector (MPFI)
5. The potentiometer throttle заслонки is faulty

Check up in a workshop injection
Check up

Check up

D. The cold engine shivers idling See And 5
E.Progretyj the engine shivers idling 1. See And 4 and 5
2. See With 3
F. Too high turns at the heated-up engine idling See And 5
G. The engine works with faults 1. The fuel filter has got littered
2. See And 3 and 5
3. See In 3
4. See With 3 and 4
Replace the filter
N.Dvigatel works with faults, is disconnected Non-uniform giving of fuel by the fuel pump Measure quantity of submitted fuel
I. Insufficient capacity of the engine 1. See And 3,4 and 8
2. See With 3 and 5
3. Throttle заслонка does not pass in position of full gas
Adjust a cable throttle заслонки

J. The engine gives return flashes in an inlet collector

1. See And 4
2. See With 3
K.Slishkom the high expense of fuel 1. See In 4
2. See With 3