Air filter and air intake ducts (Opel Vectra B)

Removal

1.7L engines

1. Loosen the clamps and remove the intake duct from the air filter housing.

2. Unscrew the nuts securing the air filter housing, disconnect the housing from the air intake and remove it from the engine compartment.

2.0L engines



3. Remove the ground cable from the battery and disconnect the electrical connectors from the air flow meter and intake air temperature sensor (indicated by the arrow).



4. Disconnect the crankcase ventilation hose from the intake duct, loosen the clamps and remove the air duct together with the air flow meter.

5. Remove the air filter cover and take out the filter element, noting its location. Unscrew the nuts and remove the air filter housing.





6. On low pressure turbo engines, to remove the air intake tubes that connect the turbocharger to the intake manifold, unscrew the screws and remove the plastic cover from the top of the engine. Loosen the clamp that secures the air intake tube to the manifold.





7. Unscrew the bolts (indicated by arrows), securing the air supply pipe to the head cover, then disconnect the air supply pipe from the turbocharger. Remove the air supply pipe (photo on the right).





8. Remove the sealing ring (indicated by the arrow), which is installed between the pipe and the turbocharger.

9. On high pressure turbo engines, the pipes connecting the heat exchanger to the manifold and the turbocharger pipes can be removed after loosening the clamps. To remove the metal pipe, loosen the clamp and pull the pipe off the turbocharger. Remove the sealing ring that is installed between the pipe and the turbocharger.

Installation

Installation is carried out in the reverse order of removal, and it is necessary to replace the sealing ring on the turbocharger.