Removing
Disconnect the negative battery terminal.
Release the clip, then disconnect the throttle cable end swivel from the throttle lever. Remove the throttle cable rubber grommet from the bracket located on the intake manifold and move the cable aside.
Loosen the screw and disconnect the air line from the throttle body.
Unscrew the nut and disconnect the brake booster vacuum hose from the intake manifold (pic. 4.118).
![](https://www.opelbook.ru/img/astra/0275.jpg)
Disconnect the breather hoses on the camshaft cover from the throttle body.
Disconnect the vacuum hoses from the throttle body, noting their location for later installation.
Disconnect the coolant hoses from the throttle body (two hoses) and from the intake manifold (one hose), marking their location for ease of installation. There may be coolant leakage, so pinch the ends of the hoses to prevent coolant leakage. If required, disconnect the coolant hose from the rear of the manifold.
Disconnect the connectors from the throttle position sensor and from the idle control motor located in the throttle body, as well as from the temperature sensor in the intake manifold receiver.
Remove the two clamp bolts and disconnect the two ground wires on the right side of the cylinder head (pic. 4.119).
![](https://www.opelbook.ru/img/astra/0276.jpg)
Disconnect the ground wire from the engine lifting eyebolt (located on the left side of the intake manifold).
Disconnect the wire from the coolant temperature gauge sensor located in the intake manifold.
Disconnect the connectors from the fuel injectors of the injectors.
Disconnect the halves of the connector located on the bracket attached to the top left intake manifold stud.
Disconnect the hoses from the fuel distributor (located underneath), noting their location for subsequent installation. The most convenient access is provided from under the vehicle - if desired, raise the front of the vehicle and secure it with a stand under the drive axle. Slowly loosen the screws to relieve system pressure. Possible fuel leakage, so take fire precautions. Clamp the ends of the hoses to prevent dirt and fuel leakage (pic. 4.123, 4.124).
![](https://www.opelbook.ru/img/astra/0277.jpg)
![](https://www.opelbook.ru/img/astra/0278.jpg)
![](https://www.opelbook.ru/img/astra/0279.jpg)
![](https://www.opelbook.ru/img/astra/0280.jpg)
![](https://www.opelbook.ru/img/astra/0281.jpg)
Loosen the bolt and nut at the top of the alternator.
Check and make sure all related hoses, tubes and wires are disconnected.
After loosening the nuts, remove the intake manifold and, if necessary, auxiliary components, as indicated earlier.
Installation
The order of work: as indicated above in the subsection "Intake manifold installation".
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