Electrical components of the injection system of the 2.0 l engine (Opel Vectra B)

Air flow meter

Removal and installation

1. Turn off the ignition and disconnect the electrical connector from the air flow meter.



2. Loosen the clamps (indicated by arrows), release the air flow meter from the intake ports and remove it.

3. Installation is carried out in the reverse order of removal.

Air temperature sensor

Warning: On high pressure turbo engines the air temperature sensor is an integral part of the air flow meter.

Removal and installation

1. Turn off the ignition, disconnect the electrical connector and remove the sensor from the intake manifold.

2. Installation is carried out in the reverse order of removal.

Accelerator Pedal Position Sensor

Removal and installation

1. Inside the vehicle, unscrew the clips and remove the lower instrument panel trim on the driver's side.

2. Disconnect the electrical connector from the sensor, which is located on the top of the pedal.



3. Remove the ball joint bracket from the tie rod and remove the tie rod from the sensor.



4. Remove the screws and remove the sensor from the pedal bracket.

5. Installation is carried out in the reverse order of removal.

Crankshaft sensor

Removal and installation

1. O Remove the screws and remove the plastic cover from the top of the cylinder head.

2. To access the sensor, lift the front of the vehicle and secure it on stands.



3. Disconnect the sensor electrical connector from the wiring harness.



4. Unscrew the bolt (indicated by the arrow) and remove the sensor from the cylinder block.



5. Installation is carried out in the reverse order of removal, and it is necessary to install a new sealing ring on the sensor.

Coolant temperature sensor

The sensor is installed on the front right side of the cylinder head.

Overpressure sensor

Removal and installation

1. Remove the screws and remove the plastic cover from the top of the cylinder head.



2. Remove the screws securing the wiring harness bracket to the top of the intake manifold and disconnect the electrical connector (indicated by the arrow) from the overpressure sensor.

3. Remove the bolt and remove the sensor from the top of the intake manifold.

4. Installation is carried out in the reverse order of removal, and it is necessary to install a new sealing ring on the sensor.

Oil temperature sensor

Removal and installation

1. Raise the front of the vehicle and support it on stands.

2. Drain the engine oil. Install a new O-ring on the oil drain plug and screw it into the oil pan.



3. Disconnect the electrical connector (pictured) and unscrew the sensor from the front of the oil pan.



4. Installation is performed in the reverse order of removal. Fill the engine with engine oil.

Electronic Control Unit (ECU)

Removal and installation

1. Remove the windshield wiper arms and disconnect the ground cable from the battery.

2. Unscrew the plastic nuts from the wiper arm axles.

3. Remove the rubber seal from the top of the engine compartment bulkhead.

4. Remove the plastic cover from the base of the windshield.

5. Unscrew the nuts and remove the protective cover of the ECU unit.

6. Release the clips and disconnect the electrical connector from the ECU.

7. Unscrew the nuts and remove the ECU unit.

8. Installation is carried out in the reverse order of removal.