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1998 Toyota Avalon Question: heat coming in to veh thru ac vents



redred dog, 3.0L V6, Fort Worth, TX, March 22, 2011, 17:44

i am getting heat thru the ac vents even with the thermostat down and all controls off i cannot stop the heat no matter what the controls are set on

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  • Answer #1

    March 22, 2011, 17:49

    This sounds very much like a defective blend door. The blend door is what directs the air either over the heater core for heating or the a/c evaporator for cooling. It sounds like your blend door is stuck, for some reason in the heat mode. here are some shops for repair:


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