Audi S4

since 2000 release

Repair and operation of the car



Audi S4
+ Introduction
+ Governing bodies and methods of safe operation
+ Current leaving and service
- Engine
   Specifications
   Removal and installation of the top cover of the engine / lower protection of a motive compartment / stretcher
   Check of a compression in engine cylinders, identification of leaks
   Check of the engine by means of the vacuum gage
   + 4-cylinder petrol engines
   + 6-and 8-cylinder petrol engines
   + 4-cylinder diesel engines
   + 6-cylinder diesel engines
   - Engine lubrication system
      General information
      The applied motive oils. Oil consumption
      Oil pump and pallet of a case
      Check of pressure of oil and sensor of pressure
+ Cooling systems, heating and air conditioner
+ Power supply systems, release and decrease in toxicity of the fulfilled gases
+ Systems of electric equipment of the engine
+ Manual box of gear shifting
+ Automatic transmission
+ Coupling, power shafts and differential
+ Brake system
+ Suspension bracket and steering
+ Body
+ Onboard electric equipment





Check of pressure of oil and sensor of pressure

The manometer with a possibility of its vvorachivaniye in the oil pressure sensor is necessary for check. The sensor of pressure is on the holder of an oil filter or near the holder.

Check

 PERFORMANCE ORDER

  1. Check oil level in the engine, if necessary, add.
  2. Warm up the engine up to the working temperature. For this purpose pass on the car until the fan of a radiator does not turn on, and then again it will not be switched off.
  3. Diesel engine of 1.9 l: Remove the top cover of the engine, address the Section Removal and installation of the top cover of the engine / the lower protection of a motive compartment / stretcher.
  1. Turn out the sensor of pressure of oil (2) on a flange of an oil filter and screw the device for check (And).
  1. Screw the device instead of pressure sensor in the holder of an oil filter.
  2. Connect a brown wire (1) of the device to weight(s).
  3. Attach a control diode lamp to positive contact of the battery (+) and to the oil pressure relay. The light-emitting diode should not light up.
  4. If the light-emitting diode lights up, replace the oil pressure relay.

If the light-emitting diode does not light up

 PERFORMANCE ORDER

  1. Start the engine.

During start of a starter you watch a light-emitting diode since the point of turning on of the sensor of pressure can be passed already at start.

  1. Petrol engine: With a pressure of oil of 1.2 - 1.6 atm. the light-emitting diode has to light up, otherwise the sensor of pressure needs to be replaced.
  2. Diesel engine of 1.9 l: With a pressure of oil of 0.55 - 0.85 atm. the light-emitting diode has to light up, otherwise the sensor of pressure needs to be replaced.
  3. Diesel engine of 2.5 l: With a pressure of oil of 0.75 - 1.05 atm. the light-emitting diode has to light up, otherwise the sensor of pressure needs to be replaced.

Check of pressure of oil

 PERFORMANCE ORDER

  1. Start the engine on single turns. Remove value of pressure of oil from the device and compare it to the value given in Specifications.
  2. Increase speed to 2000 rpm. Read out value of pressure of oil from the device and compare it to the value given in Specifications.

If the required value of pressure of oil is not reached

 PERFORMANCE ORDER

  1. Check existence of mechanical damages to the engine, for example, damage of bearings of a bent shaft (work HUNDRED).
  2. If necessary, replace the holder of an oil filter with the safety valve or the oil pump.

At increase in speed of the engine of pressure of oil should not exceed 7.0 atm. Otherwise check oil channels. If necessary, replace the holder of an oil filter with the safety valve.

  1. Diesel engine of 1.9 l: Establish into place the top cover of the engine.