Cooling system — filling (Opel Vectra A)

1. Before filling the cooling system, check the condition of all hoses and their clamps. Please note that antifreeze must be present in the system all year round to prevent corrosion of engine components (see Chapter 5).

2. On 1.4 and 1.6 l models (except C16 NZ2) disconnect the wire and unscrew the coolant temperature sensor from the intake manifold.

3. Remove the expansion tank cap and fill the system, slowly pouring in recycled coolant to avoid air locks.

4. If the coolant is being replaced, first add about a liter of water, then the required amount of antifreeze (based on the total volume of liquid) (see Chapter 5), then pour in the rest of the water.

5. On 1.4 and 1.6 l models (except C16 NZ2) install coolant temperature sensor (after the coolant, free of air bubbles, begins to flow out of the hole in the intake manifold).

6. Bring the coolant level up to the "COLD" (or "KALT") mark on the expansion tank, then install the tank cap.

7. Start the engine and allow it to warm up to normal operating temperature, then turn it off and allow it to cool.

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8. Check the system for leaks, especially around previously disconnected components. Check the coolant level in the expansion tank and top up if necessary. Note that the exact level can only be determined after the system has cooled. If the expansion tank cap must be removed while the engine is still hot, wrap a thick cloth around the cap and unscrew it slowly, releasing the pressure in the system gradually. Be careful not to release hot steam or splash liquid out of the system.

9. On DOHC models, install the lower engine skid plate.