Skoda Felicia

since 1994 release

Repair and operation of the car

Skoda Felicia
+ Cars of the Skoda Felicia brand
+ Maintenance instruction
+ Routine maintenance
+ Repair of the engine
+ Cooling systems, heating
- Power supply system
   + Power supply system of the carburetor engine of 1.3 l
   + System of the central injection (SPFI) of the petrol engine
   + System of the distributed injection (MPFI) of the petrol engine
   + Power supply system of the diesel engine
   - Systems of decrease in toxicity and production of the fulfilled gases
      System of catching of fuel evaporations - the general information and replacement of components
      System of ventilation of a case - the general information
      Removal and installation of the l-probe
      System of recirculation of the fulfilled gases (EGR) - the general information and replacement of components
      Removal and installation of a final collector
      System of release - the general information and replacement of components
      The catalytic converter - the general information and precautionary measures
+ Engine electric equipment
+ Coupling
+ Transmission
+ Power shafts
+ Brake system
+ Suspension bracket and steering
+ Body and finishing of salon
+ Onboard electric equipment

Removal and installation of a final collector

Components of installation of the EGR valve

1 — the Inlet pipeline
2 — Laying
3 — the EGR Valve
4 — the Fixing collar

5 — the Coupling screw
6 — the Connecting tube
7 — the Final collector
8 — the Fixing nut

General information

The system consists of the executive EGR valve, the electromagnetic valve of management of EGR, the control unit of the diesel and connecting vacuum hoses.

The EGR valve by means of flange connection is fixed on the inlet pipeline. The second flange of the valve by means of a semifixed tube is connected to a final collector.

The electromagnetic EGR valve / modulator by means of an arm is fixed in a back part of a motive compartment.

Control over functioning of the EGR system is exercised by the control unit of the diesel which is also located in a back part of a motive compartment near the relay of candles of heat. The control unit activates the EGR system only in the range of frequencies of rotation of the engine from 825 rpm to 3200 rpm. Outside the stipulated range the system is disconnected.
Shutdown of the EGR system is provided also within the first two seconds from the moment of the beginning of acceleration, and also at the movement of the car at the height over 1000 m above sea level.

Replacement of components

EGR valve


1. Disconnect a vacuum hose from the union in the top part of the EGR valve.

2. Turn out bolts of fastening of the valve to a flange of the inlet pipeline. Remove and will throw out sealing laying.
3. Turn out the coupling screw of a fixing collar and disconnect the valve from the semifixed tube going from a final collector. In case of need give fixing nuts and pick up the semifixed phone from a final collector (do not forget to remove also sealing laying).
4. Installation is made upside-down. Pay attention to the next moments:

a) Do not forget to replace sealing laying of flange connection;
b) If picked up the semifixed phone, replace also its sealing laying. Freely screw fixing bolts and before tightening from with the required effort, make sure that the tube is not overwound and is not under loading.

Electromagnetic EGR valve modulator


1. Make sure that ignition is switched off, then disconnect an electrical wiring from the valve. Do not mix the valve socket with the socket of the device of increase in turns of idling located right there and painted in gray color.

2. Release collars and disconnect hoses from valve unions. Try to remember orientation of the valve in a path.
3. Installation is made upside-down.

Track correctness of connection of vacuum hoses. Violation of functioning of the EGR system leads to decrease in efficiency of process of combustion of air-fuel mix and increase in smoke of an exhaust.