Contents: Damper actuator ↡ Throttle actuation mechanism ↡ Coolant temperature sensor ↡ Electronic control unit (ecu) ↡
Damper actuator
Carburetor flap actuator PIERBURG
A – carburetor body; B – thrust; C – actuator housing; D – fastening ring; E – screw
1. Remove the air filter.
2. Disconnect the electrical connectors from the actuator.
3. Unscrew the screw and remove the actuator mounting ring (see fig. Actuator of the PIERBURG carburetor flap).
4. Disconnect the rod from the choke lever, then rotate the actuator housing, remove the locking pin and remove the actuator from the carburetor.
5. Installation is carried out in the reverse order of removal.
Throttle actuation mechanism
PIERBURG carburetor actuator
A – actuator housing; B – vacuum hose; C – nut; D – carburetor body; E – spring; F – adjusting screw
1. Remove the air filter.
2. Disconnect the electrical connector and vacuum hose from the side of the actuator.
3. Unscrew the three nuts and remove the actuator from the carburetor (see fig. Actuator of the PIERBURG carburetor).
4. Installation is performed in the reverse order of removal. Check that the gap between the actuator rod and the screw on the throttle lever should be within 1.5 - 2.5 mm.
Coolant temperature sensor
Location of the coolant temperature sensor on the cylinder head
A – coolant temperature sensor; B – sealing ring; C – cylinder head
1. The coolant temperature sensor is located at the front of the cylinder head (see Fig. Location of the coolant temperature sensor on the cylinder head).
2. Disconnect the electrical connector from the sensor.
3. Make sure the engine is cold, then briefly unscrew the cap from the expansion tank to relieve pressure in the cooling system.
4. Unscrew the coolant temperature sensor and remove the sealing ring.
5. The coolant temperature sensor can be tested by heating it in a container of water. Use a thermometer to determine the water temperature. Connect an ohmmeter to the sensor contacts and measure the sensor resistance at different temperatures.
6. The coolant temperature sensor is installed in the reverse order of removal.
Electronic control unit (ecu)
Caution! The Electronic Control Unit (ECU) contains static-sensitive components, so when disconnecting electrical connectors from the ECU, do not touch the connector contacts with your hands or tools, as this may damage the ECU components. When working on the ECU, discharge static electricity from your body by touching grounded metal objects. Disconnect electrical connectors from the ECU only for the time required for repairs.
The ECU is located in the rear right side of the engine compartment.
1. Remove the ground cable from the battery.
2. Release the clips and remove the ECU cover.
3. Press the retaining clips on the ECU unit and remove the multi-pin electrical connector from the unit. When removing the connector, be careful not to damage the connector contacts.
4. Remove the screws and remove the ECU unit.
5. Installation is carried out in the reverse order of removal.