Removal and installation of the throttle assembly

Signs of a throttle that is not fully closing can be increased idling speed and fuel consumption, and if the throttle is not fully opened, the engine does not develop full power and is not throttled enough, jerks and dips in its operation are observed when the car is moving. Throttle valve fouling from blow-by deposits usually results in erratic idling. The throttle valve drive is electric, it is controlled by the electronic unit of the engine control system. Repairs to the actuator require special equipment and qualified personnel. If these problems occur, first try flushing the throttle valve (e.g. thinner or special aerosol carburettor cleaner). If this does not lead to a positive result, replace the throttle assembly.

You will need: T30 TORX wrench, Phillips screwdriver.

1. Disconnect a wire from the minus plug of the storage battery.



2. Loosen the clamp that secures the air supply sleeve to the nozzle of the throttle assembly and remove the sleeve from the neck of the throttle assembly.



3. Slide the wire harness retainer up..




4.... and disconnect the block from the cover of the throttle assembly.



5. Remove the four screws securing the throttle assembly to the intake pipe..



6.... and remove the throttle assembly.

7. If the throttle assembly was not removed for replacement, clean the contaminated throttle assembly with carburetor cleaner.

8. Remove oil and other contaminants from the cavity of the inlet pipe.

9. Install the throttle assembly in the reverse order of removal.