Audi 80/Avant (B4)

since 1991-1995 of release

Repair and car operation

Audi 80/Avant
+ Technical specification
+ Engines
+ System of production of the fulfilled gases
+ cooling System
+ Fuel tank and fuel pump
+ Air filter and airintaking channels
- Injection system
   + System of injection of Mono-Motronic
   + System of injection of Digifant
   + System of injection of KE-III-Jetronic
   - Systems of injection of MPI and MPFI
      Operating procedure
      Lambda regulation
      Malfunctions and independent diagnostics
      Independent repair
      Visual check
      Check of separate elements
      Removal of elements
      Hummock drive of "gas"
      Check of a mode of idling and analysis of exhaust gases
      List of malfunctions
+ Coupling
+ Transmission and transmission
+ Suspension bracket and steering
+ Brake system
+ Anti-blocking system of brakes
+ Wheels and tires
+ Body electrosystem
+ ignition System
+ Lighting
+ Signalling devices
+ Devices and auxiliary devices
+ Heating and ventilation
+ body Elements
+ Search of malfunctions
+ Specifications

List of malfunctions

Systems of injection of MPI/MPFI

Its reason
Than to help
And. The cold engine is not got absolutely or very badly 1. Faulty safety lock 13, 21, 27, 28 or 32
2. Faulty relay of the fuel pump
3. The fuel pump does not submit fuel absolutely or very badly
4. Faulty regulator of pressure of fuel
5. Faulty valve of idling
6. Faulty control unit
7. There is no signal of frequency of rotation from the sensor of frequency of rotation
8. In the engine unrecorded air arrives
To replace
To check, if necessary to replace
Whether there is in general a gasoline in a fuel tank?
To check the pump, to measure amount of submitted fuel (Head the Fuel tank and the fuel pump)
In a workshop to measure pressure
To check
To check in a workshop
To check cable passing
To check all pipelines
Century. The heated-up engine is not got absolutely or got badly 1. The vacuum pipeline conducting to a regulator of pressure of supply of fuel is faulty
2. See. And 1-4, 6 and 7
3. Vpryskny nozzles are not tight
4. The faulty sensor of temperature of cooling liquid
To check the pipeline
To check nozzles
To check the sensor
S.Dvigatel is got, but again глохнет 1. See. And 1 and 5
2. See В1
3. The indicator WITH differs from the standard
4. A faulty flowmeter of air (MPI) or the sensor of temperature of inlet air or the pressure sensor in a final collector (MPFI)
5. Faulty potentiometer of a butterfly valve
To check injection system
To check
To check
D. The cold engine shivers in an idling mode 1. See. And 5  
Е. The heated-up engine shivers in an idling mode 1. See. And 4 and 5
2. See С3
F. Too high turns of idling See. And 5  
G. The engine works with interruptions 1. The fuel filter is hammered
2. See А3 and 5
3. See В34 See С3 and 4
To replace the filter
N.Dvigatel works with interruptions, глохнет The fuel pump works non-uniformly To check productivity of the fuel pump
I. Insufficient engine capacity 1. See А3, 4 and 8
2. See С3 and 5
3. Butterfly valves do not rise in the provision of full "gas"
To adjust a hummock drive of "gas"
J. Return flashes in a final collector 1. See А4
2. See С3
K.Slishkom high fuel consumption 1. See В4
2. See С3