Audi 80/90/Coupe

since 1986-1991 release

Repair and operation of the car


Audi 80/90/Coupe
+ 1.2. Identification of the car
+ 2. Engines, carburetors
3. Lubrication system
+ 4. Cooling system
- 5. Fuel system
   - 5.2. Systems of injection of fuel
      5.2.1.2. Specifications (4-cylinder models)
      5.2.1.3. Components of system of injection for 5-cylinder models
      5.2.1.4. Specifications (5-cylinder models)
      5.2.1.5. Starting position of a plate of the sensor of an air stream
      5.2.1.6. Free wheeling of a plate of the sensor of an air stream
      5.2.1.7. Lever of a plate of the sensor of an air stream
      5.2.1.8. The operating plunger
      5.2.1.9. Throttle valve
      5.2.1.10. Rope of management of a butterfly valve
   5.2.2. Fuel injectors (20-valvate models)
   + 5.2.3. Electronic control system of the MPI engine
+ 6. Exhaust system
+ 7. System of ignition
+ 8. Transmission
+ 9. Suspension brackets, wheels
+ 10. Brake system
+ 11. Steering
+ 12. Body, salon
+ 13. Air conditioning system
+ 14. Electric equipment


5.2.1.4. Specifications (5-cylinder models)
GENERAL INFORMATION

Since models of 1986
Engine code NG
Control unit of fuel injection 443 906 264 With
Control unit of ignition 443 907 397 With
Ignition distributor 034 905 205 H
Ignition distributor 034 905 205 H
Restriction of number of rpm (the top limit) (via the CIS-E III control unit) 6600 ± 100 об. / mines
Installation of a corner of an advancing of ignition:
test value 13 ° – 17 ° before the top dead point
adjusting value 15 ± 1 ° before the top dead point
Operating procedure of cylinders 1–2–4–5–3
Spark plugs
Bosch W7DTC
interelectrode gap 0.8 ± 0.1 mm
inhaling moment 20 N of m.
Idling speed:
manual transmission 790 ± 70 rpm.
automatic transmission 790 ± 70 об. / mines
Contents WITH (the probe of the oxygen sensor is disconnected):
test value 0.3 – 3.0 about. %
adjusting value 0.6 – 1.0 about. %

Arrangement of an adjusting tag on a flywheel

Prevention

Idling speed, installation of a corner of an advancing of ignition and contents WITH are interconnected and have to be checked and be regulated together.

Engine code
NG
Pressure in system with the blocked manometer (in a closed position) 6.1 – 6.5 bar
Pressure difference is I and II:
I (the regulator of pressure difference is disconnected) on about 0.3 - 0.5 bars it is less, than pressure in system
II (the regulator of pressure difference is connected and ignition is included) on about 1.2 - 1.5 bars it is less, than pressure in system
Fuel cut-off pressure (after 5 seconds) at most 3.7 bars
Residual pressure:
after about 10 minutes at least 3.5 bars
after about 20 minutes at least 3.4 bars
Injector valves
Tolerance of amount of injectable fuel in a set of injectors:
Idling mode (first position of the VW 1348/1 tool)
at amount of the fuel of 20 ml measured by the tool 4480 at most 2.5 ml
Mode of completely open butterfly valve (last position of the VW 1348/1 tool)
at amount of fuel of 80 ml measured by the tool 4480
Working pressure 4.3 – 4.6 bar
Pressure difference regulator resistance about 17.5 - 21.5 Ohms