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
      General information and precautionary measures
      Removal and installation of assembly of the air cleaner
      The control unit temperature of the soaked-up air - the general information
      Removal, installation and adjustment of a cable of an accelerator
      Removal and installation of components of system of injection Simos 2P
      Removal and installation of components of system of injection Magneti-Marelli 1AV
      Removal and installation of assembly of the fuel pump and sensor of measurement of fuel consumption
      Removal and installation of the fuel tank
      Dumping of residual pressure in a power supply system
      Removal and installation of the inlet pipeline
      Check of serviceability of functioning and adjustment of system of injection
      Unleaded fuel - the general information and rules of use
   + Power supply system of the diesel engine
   + Systems of decrease in toxicity and production of the fulfilled gases
+ 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 components of system of injection Magneti-Marelli 1AV

Scheme of components of the MPFI Magneti-Marelli 1AV system

1 — the Sensor of temperature and an air stream
2 — the RPM meter and provisions of a bent shaft
3 — the l-probe
4 — the detonation Sensor
5 — the Sensor of temperature of cooling liquid
6 — TPS, the step motor and the trailer switch
7 — the Additional signal
8 — ECU (microprocessor 1AV MPIS 192)

9 — ECU of an immobilizator
10 — the Diagnostic socket
11 — the ignition Coil
12 — injection Injectors
13 — the Relay of the fuel pump
14 — Em the valve of a purge of a coal adsorber
15 — the Step electric motor


See the preventions made in the Section the General information and precautionary measures.


The scheme of connection of components of the MPFI system is submitted on an illustration.

Throttle case

REMOVAL

 PERFORMANCE ORDER

1. Remove the top covers of the case of a throttle and the air cleaner (see the Section Removal and installation of assembly of the air cleaner).
2. Disconnect an accelerator cable from a control lever the provision of a butterfly valve (see the Section Removal, installation and adjustment of a cable of an accelerator).
3. Disconnect a negative wire from the battery.

4. Disunite the socket of an electrical wiring of the module of provision of a butterfly valve.

5. Disconnect the hose going from a coal adsorber from a forward part of the case of a throttle.

6. Turn out four through bolts and remove the throttle case from the inlet pipeline. Remove also sealing washer - at assembly it is subject to replacement without fail.

INSTALLATION

 PERFORMANCE ORDER

Installation is made upside-down. Pay attention to the next moments:

a) Do not forget to replace a sealing washer;
b) Through bolts of fastening of the case of a throttle have to be tightened with the required effort;
c) Track quality of all hose and electric connections;
d) Do not forget to adjust an accelerator cable tension (see the Section Removal, installation and adjustment of a cable of an accelerator).


Injectors of injection and fuel highway


In the presence of suspicions on malfunction of injectors it is not necessary to start their removal at once. At first try to clean injectors by addition in fuel of special additive (ask in shops automobile химикалиев).

REMOVAL

 PERFORMANCE ORDER

1. Dump pressure in a power supply system (see the Section Dumping of Residual Pressure in a power supply system).
2. Disconnect a negative wire from the battery.
3. Remove the top cover of the case of a throttle (see the Section Removal and installation of assembly of the air cleaner).

4. Previously having marked, disconnect an electrical wiring from injection injectors.

5. Release a plait from clamps on the top part of the fuel highway and shift it aside.

6. Disconnect a vacuum hose from the union in the lower part of the regulator of pressure of fuel.

7. Disconnect hoses of giving and return of fuel from the end of the fuel highway. Try to remember the adjusting provision of hoses (check them for existence of factory marking of the direction of a stream).

8. Turn out two fixing bolts and accurately remove the fuel highway together with injection injectors from the inlet pipeline. Track that at extraction of injectors from landing nests in the highway the lower sealing rings remained on the regular places.

9. Injectors it can be removed from the highway in an individual order by extraction of metal clamps. Remove the top sealing rings of injectors.

10. In case of need remove the fuel pressure regulator.
11. By means of a universal tester measure the electric resistance of each of injectors. Compare results of measurements to requirements of Specifications.

INSTALLATION

 PERFORMANCE ORDER

Installation is made upside-down. Pay attention to the next moments:

a) Do not forget to check a condition of sealing rings of injectors. Defective rings are subject to replacement;
b) Track reliability of landing of metal clamps of fastening of injectors;
c) Track correctness of connection to the highway of hoses of giving and return of fuel;
d) Track quality of all hose and electric connections;
e) Before starting operation of the car check a power supply system for existence of leaks.


Fuel pressure regulator

REMOVAL

 PERFORMANCE ORDER

1. Dump pressure in a power supply system (see the Section Dumping of Residual Pressure in a power supply system).
2. Disconnect a negative wire from the battery.
3. Remove the top cover of the case of a throttle (see the Section Removal and installation of assembly of the air cleaner).

4. Disconnect a vacuum hose from the union in the lower part of the regulator of pressure.

5. Weaken a collar and disconnect a fuel supply hose from the highway. At the same time the most part of the fuel which is contained in the highway will pour out outside - prepare small drain capacity and enclose rags under assembly of the regulator.
6. Take a fixing clamp from the top part of the regulator case fixed at an end face of the fuel highway. Remove the regulator with sealing rings.

INSTALLATION

 PERFORMANCE ORDER

Installation is made upside-down. Pay attention to the next moments:

a) Worn-out sealing rings are subject to replacement without fail;
b) Track reliability of landing of a clamp;
c) Track durability of connection of a vacuum hose.


Module of provision of a butterfly valve

The module is built in in the case of a throttle and is not subject to replacement in an individual order. In case of problems ask for the help specialists of car service.

The sensor of temperature/pressure of the air which is soaked up in the inlet pipeline

REMOVAL

 PERFORMANCE ORDER

1. The sensor is installed in the right part of the inlet pipeline.

2. Disconnect a negative wire from the battery.
3. Remove the top cover of the case of a throttle (see the Section Removal and installation of assembly of the air cleaner).
4. Disconnect an electrical wiring from the sensor.
5. Turn out two fixing screws and take the sensor from the nest in the pipeline.

INSTALLATION

 PERFORMANCE ORDER

Installation is made upside-down. Track reliability of tightening of fixture.


Sensor of temperature of cooling liquid


The sensor of temperature of cooling liquid of system of injection of fuel is a part of the sensor of the measuring instrument of temperature (CTS).

Oxygen sensor (l-probe)


See the Section Removal and installation of the l-probe.

Electronic control unit (ECU)

ECU is located behind on the left partition of a motive compartment. The block is protected by a special code and service center of the Skoda company should not be removed without preliminary consultation with representatives company. The unauthorized rassoyedineniye multicontact can give the socket to violation of serviceability of functioning of ECU.

Relay and safety locks of the fuel pump

 PERFORMANCE ORDER

1. The relay of the fuel pump and safety locks of system of injection are located in the assembly block installed in interior of the car (see the Head Onboard electric equipment).
2. The relay of the pump is on the fifth position among the relay of the working panel of the assembly block. The electric chain of a contour of power supply of the pump is protected by a safety lock No. 4.
3. The relay is taken from the nest by a simple pulling. Installation of the relay is unambiguous in view of asymmetry of a form of a nest.
4. The safety lock is removed also as well as all other safety locks (see the Head Onboard electric equipment).
5. It is necessary to notice that removal of the main safety lock of system of injection (No. 1) leads to deleting of adaptation data from memory of ECU, also as it occurs at shutdown of the battery. Reset of working parameters demands some time that can lead to violation of stability of turns of idling within the first several minutes after the first start of the engine.