Malfunction: The coolant temperature readings when the engine is warm are in the red range.
| Cause | Elimination |
| Not enough coolant to circulate | The radiator should be full to the brim. The reservoir should be filled to the marking |
| The electric fan does not work | The electric fan conductor is damaged |
| Thermostat does not open | Check if the radiator is warm in the area of the lower tank or not. If not, check the thermostat and, if necessary, replace it |
| Defective electric fan switch | Short-circuit both terminals with the thermostat switch wires with an auxiliary wire. The fan should work. If before, replace the switch |
| Defective cooling pump | Remove and check the oblique |
| Defective coolant temperature sensor | Check the sensor |
| Defective temperature indicator | Check |
Article posted on Internet portal (OpelBook.ru)
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