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Old 08-06-2019, 12:57 AM   #96
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Join Date: Mar 2012
Location: Ft. Leonard Wood
Posts: 6,141
Meir was incorrect. Missing foam on the heater core flap will allow varying degrees of your cooled AC air to flow over the always hot heater core, making the AC temp vary.

Fixing the heater core flap will solve this.
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