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How to Clean the Heater Radiator on an Opel Corsa

Model: Vauxhall Corsa Corsa B - Years 1993-2000

If you notice that even when the air conditioning fan is on, only cold air is coming out and no hot air, it will be necessary to clean the heater radiator because it is likely blocked and the hot fluid inside is no longer circulating. The following description provides the instructions and methods to carry out this operation. After opening the bonnet, loosen the hose clamp on the water inlet to the radiator and connect the garden hose. Then turn on the water and proceed to wash the radiator; as soon as the water is turned on, you will see brown liquid and sludge coming out. Wait a few minutes for the cleaning to be effective, then disconnect the hose and reattach the hose clamp.

Updated on 18 July 2026 by ScegliAuto

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