Quote:
Originally Posted by thom4782
The fact that you get different temperatures at different vents is strange.
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Not unusual at all on a 986/996. When the mix flaps fail, sometimes chunks of foam will clog part of the vent system causing this exact symptom. It doesn't always happen this way but it does happen often. Visual evidence of foam bits flying out or found lodged in the vents is good confirmation of failed mix flaps.