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How to troubleshoot the heating system in an Audi 80?

I recently purchased an Audi 80 and have been having issues with the heating system. The air blows out cold even when the temperature is set to hot. How can I troubleshoot and fix this issue?

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Answers (3)

J

Check for any clogs in the heating system. A buildup of debris can cause the air to blow out cold. Also, make sure the heater core is not faulty. If it is, it will need to be replaced.

S

Make sure there is enough coolant in the system. Low coolant levels can cause the heater to malfunction. If the levels are low, top it off and inspect for any leaks.

M

Check the blend door actuator and make sure it is functioning properly. If it isn't, it may need to be replaced. Additionally, check for any loose connections in the heating system.

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