Astra L4-1.8L (2009)
Install the 6 damper rings.
11. Install the front exhaust pipe to the catalytic converter.
Use a new gasket.
Tighten the 3 new nuts to 20 Nm (15 lb ft).
12. Install the catalytic converter control oxygen sensor wiring harness.
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Connect the wiring harness plug.
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Install the wiring harness into the bracket.
13. Install the oil dipstick guide tube. Refer to Oil Level Indicator Tube Replacement (See: Engine/Engine Lubrication/Engine Oil Dip Stick - Dip
Stick Tube/Service and Repair).
14. Clean the 2 threads.
15. Install the 2 engine transport shackles.
Tighten the 2 bolts to 25 Nm (18 lb ft).
16. Install the bracket, wiring harness for the mixture regulator oxygen sensor to the cylinder head together with the exhaust manifold heat shield.
Tighten the bolt to 25 Nm (18 lb ft).
17. Install the mixture regulator oxygen sensor. Refer to Heated Oxygen Sensor Replacement - Sensor 1 (See: Powertrain Management/Computers
and Control Systems/Oxygen Sensor/Service and Repair).
18. Install the resonator. Refer to Air Cleaner Inlet Duct Replacement (See: Engine/Tune-up and Engine Performance Checks/Air Cleaner
Housing/Air Cleaner Fresh Air Duct/Hose/Service and Repair).
19. Install the air cleaner assembly. Refer to Air Cleaner Assembly Replacement (See: Engine/Tune-up and Engine Performance Checks/Air Cleaner
Housing/Service and Repair).
20. Connect the battery.
Install the negative connection to the ground terminal.
Tighten the nut to 5 Nm (44 lb in).
21. Inspect and correct the engine oil level.
22. For programming procedures, refer to Control Module References (See: Testing and Inspection/Programming and Relearning).
23. Close the hood.
