Audi A3

since 1997 of release

Repair and car operation

Audi A3
+ Maintenance instruction
+ Current leaving and service
+ Engine
+ Systems of cooling, heating
- Power supply system and production of the fulfilled gases
   - Power supply system
      Removal and installation of the fuel pump/sensor of a stock of fuel
      Removal and installation of the fuel filter
      Adjustment of a drive of gas
      Removal and installation of the case of the air filter
      Connection of remote control by the fuel pump for carrying out checks
      Check of the fuel pump
      Check of the relay of the fuel pump
   + System of injection of fuel
   + System of injection of the diesel engine
   + System of production of the fulfilled gases
+ engine Electric equipment
+ Manual box of gear shifting
+ Automatic transmission and models with a full drive
+ Coupling and power shafts
+ Brake system
+ Suspension bracket and steering
+ Body
+ Onboard electric equipment
+ Elektroskhema


Removal and installation of the fuel pump/sensor of a stock of fuel


The fuel pump together with the fuel level sensor at petrol engines is in a fuel tank of a reserve. At AUDI A3 cars with the diesel engine fuel is sucked in by TNVD. Therefore in a fuel tank the level sensor is located only. All-wheel drive cars owing to existence of the driveshaft taking a place, have a fuel tank, two-piece. In this case each of two half of a fuel tank has the sensor of level. In the right tank there is an electric fuel pump.

The fuel level sensor consists of a float and a potentiometer. At fall of level of fuel falls as well a float. The potentiometer connected with a float increases thus resistance of the sensor. Thus, on the dashboard tension and the index of level of fuel decreases moves in the direction "is empty". At cars with a fuel tank, two-piece, the processor calculates the general stock of fuel on the basis of signals of both sensors, operating the index of a stock of fuel on the dashboard.

At removal of the fuel pump some volume of fuel can flow out. Fuel pairs are poisonous and inflammable, therefore it is necessary to watch especially good ventilation of a workplace. Exclude fuel hits on skin. Use the mittens resistant in relation to fuel. Do not use dug-out fire. There is a danger of emergence of a fire! Keep in readiness the fire extinguisher.
Before removal of the fuel pump and the sensor of a reserve it is desirable to empty a tank. It is possible to apply the radial fan which electric motor is outside of an air stream to ventilation of a workplace.


1. Disconnect a negative cable (–) the storage battery at the switched-off ignition.


Thereof information from electronic blocks of memory, as, for example, a radio receiver code is erased. Without a code the radio receiver can be included only by the manufacturer or HUNDRED AUDIS. Therefore familiarize with subsection materials Input of a code of a radio receiver.

2. Cast away a back seat and unscrew a cover of the sensor of a reserve of fuel and the fuel pump.


The fuel system is under pressure! Before opening of shlangovy connections put on it a thick rag. Then carefully open a hose and remove pressure. Use thus goggles.

3. Disconnect submitting–2–and returnable–1–pipelines, having compressed for this purpose stoppers on quick disconnect couplings. Pipelines close jams, for example, a bolt with hermetic.
4. Rasstykuyte I will corrode the sensor of a reserve of fuel / the fuel pump.
5. Unscrew a cap nut the special AUDI-3217 tool.


If the specified tool available is not present, unscrew a nut by means of wooden whetstone and easy blows of a hammer.
At all do not allow formation of sparks.

6. Take out from an opening of a fuel tank the pump block/sensor of a reserve and a sealing ring.
7. Merge fuel from the pump block in a tank or the corresponding capacity.
8. Remove if necessary the sensor of a reserve of fuel. For this purpose release connections of wires–3–and–4–. Raise a screw-driver lock levels–1–and–2–and remove the sensor down.


1. Insert the sensor in directing on the holder and press before fixing up. Join electric wires on the reserve sensor.
2. Establish the pump block in a fuel tank. Watch that the sensor of the index of a reserve of fuel thus was not bent. A sealing ring before installation moisten with fuel.
3. Check the provision of a flange. The arrow on a cover should indicate in the arrow direction on a tank, thus address to an illustration.
4. Tighten a cap nut the special AUDI-3217 tool, effort of an inhaling of 60 N.Mozhno to tighten a cap nut in easy blows of a hammer through wooden whetstone.
5. Attach submitting and returnable hoses, thus quick disconnect connections should be fixed. When fastening apply new tape collars. The returnable hose has the dark blue color submitting the black. Shooters on a flange specify the direction of movement of liquid.
6. Join electric connections.
7. Fix a cover of the sensor of a reserve of fuel.
8. Put into place a back seat.
9. Attach a negative cable (–) to a battery battery room.


Make active automatic equipment of safety of electric window regulators, enter a radio receiver code, establish hours, thus address to subsection Input of a code of a radio receiver.