2. On carbureted engines, disconnect the warm air duct to gain access to the thermostat housing.
3. Disconnect the electrical wiring, unscrew the temperature sensor on the thermostat housing at the top (photo).
4. On fuel injected engines, also disconnect the coolant hose from the base of the throttle body.
5. Pour coolant into the radiator or expansion tank (if any), until it flows out of the temperature sensor hole, then install and tighten the sensor and connect the wiring.
[Material published on the website: www.opelbook.ru]
6. Install a warm air duct on carbureted engines.
7. On fuel injected engines, continue adding coolant until coolant begins to flow from the throttle body hose, then connect the hose.
8. On all engines, continue adding coolant until the level reaches the "cold" mark. On the radiator, this is indicated on the level plate in the filler neck or 50.0 mm below the top of the filler neck. The separately installed expansion tank has its own "cold" level mark.
9. Install the filler cap.
10. Start the engine and let it run at high idle until it reaches normal operating temperature, indicated by the thermostat opening and the upper hose becoming warm.
11. Stop the engine, let it cool for two to three hours, then recheck the coolant level and, if necessary, top up to the cold level as described in step 8. Replace the filler cap.
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