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1. heat control linkage disconnected or broken or vacuum source problems(low vaccum source or broken vacuum lines) 2. heater unit doors stuck or non functioning heater door actuators

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16y ago

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Because the resistor is shot on my 93 Jeep the motor runs on high all the time so I am having to order a resistor which should cure the problem but I would replace the motor also.

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14y ago
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Q: Whywill a 93 Jeep Grand Cherokee Heater Motor not shut off?
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