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
      The major knots
      So the system of injection of 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)
      Butterfly valve cable
      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
+ ignition System
+ Lighting
+ Alarm equipment
+ Tools and devices
+ Heating and ventilation
+ body Details
+ Salon
Search of malfunctions
Technical characteristics





The help at malfunctions

System of injection of Motronic

Malfunction
Its reasons
Your help
And. The cold engine is not got or got badly 1. Defective safety lock 15, 28, 29, 32 or 34
2. Defect of the relay of supply by power supply
3. The fuel pump does not submit fuel or submits insufficient quantity
4. The regulator of pressure of fuel is faulty
5. The sensor of temperature of cooling liquid is faulty
6. The knot of management of a butterfly valve is faulty
7. The control unit is faulty
8. Malfunction in wires between the sensor of the Hall and the control unit
9. In the engine additional air arrives

Replace
Check, if it is necessary, replace
There is a gasoline in a tank? Check the pump, measure amount of submitted fuel
Measure pressure
Check
Check in a workshop
Check in a workshop
Check wires on all length
Check all hoses

Century. The warmed-up engine is not got or got badly 1. The vacuum hose to a regulator of pressure of fuel is faulty
2. See. And 2–9
3. Injection valves are not tight
Check a hose
Check valves
S.Dvigatel is got, but again глохнет 1. See. And 6
2. The knot of management by a butterfly valve (only after knot or dismantle replacement and installation) is not adapted
3. See. In 1
4. It is faulty a lambda probe
Check the valve
Carry out in a workshop the main installation
Check functioning if it is necessary – replace
D. The cold engine shivers idling 1. See. And 2 and And 5
2. See. With 2
 
Е. The warmed-up engine shivers idling 1. See. And 6
2. See. With 2
 
F. Turns of idling fall at complete turn of a wheel by means of the servo-driver 1. See. And 6
2. See. With 2
 
G. The engine works with interruptions 1. The fuel filter got littered
2. See. And 3
3. See. In 3
4. See. With 5
Replace the filter
N.Kolebaniya of number of turns at 2000–3000 rpm. See. And 7  
I. The engine works roughly, with interruptions See. And 3  
J. Insufficient engine capacity 1. See. And 3, 6 and 9
2. The butterfly valve does not pass to the provision of full gas
Adjust a butterfly valve cable
K.Dvigatel does return flash in an inlet collector See. And 4