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I have a duo temp on the air conditioner. One side blows cold and the other blows hot. The fan resister was just replaced.

Answers from the Automotive Experts

Amanda J. Pierce, MBA Debbieq, By your description, it sounds like your HVAC blend doors in the dash have malfunctioned. At times, you may have the cable that is hooked to the blend doors, disconnect. This can cause one side to be hot and the other cold when the air conditioner is running.

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