quattroworld


D2 A8/S8 (1997 - 2003)
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Almost certainly the valve if one side is hot
Posted by: hyperlogos (20841) on 2017-11-10 22:35:41
In Reply to: Try bleeding again. But the heatercore valve may be bad. Its quite common. posted by Summeronthechain on 2017-11-10 16:39:37

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Although there is also the possibility of a failed climate control servo. Check codes on the climate control module.

Both valves and the pump are sold as one (rather expensive) unit but it is physically possible to swap one valve. I have a unit with one dead valve on my parts car...
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All messages | Search Forums | Return to D2 A8/S8 (1997 - 2003)