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2002 Nissan Altima - Heat doesn't get hot and doors get stuck

I had the air conditioner control unit replaced because the knob that switches from cold to hot was broken. The heat still blows warm air. The mechanic said that I need a heater control box because when he turns the new knob from cold to hot, the doors get stuck due to corrosion around the bushing(?). Nissan said that I just might need to replace the actuators, the blower resistor and all three doors.

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Did the switch break because it was stuck? If so, then yes, they will have to change actuators and doors. Does the fan work on all speed setting? If so then you do not need a blower resistor. The resistor pack only controls the current flow to change speeds of the fan.

Posted on Dec 05, 2008

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Paul 'W' U.K

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