Sriutta Posted February 19 Share Posted February 19 When I turn off the heat it stays on. I also can't change the fan speed. I changed the resistor and nothing changed. My vehicle has the automatic climate control. I hate it but stuck with it. What could be the problem. I also changed the cabin air filters they were terrible. Link to comment Share on other sites More sharing options...
Slartibartfast Posted February 20 Share Posted February 20 I don't know crap about the R51, but I'll bet the service manual has trouble diagnosis info for the blower speed control, or at least a circuit diagram. Free download here if you haven't yet. Sounds like the hvac controls are stuck somehow. Could be the control panel itself, or whatever amplifier it talks to that moves the blend door and sets the fan speed, or the wiring between those things. Hopefully it's the cheaper/easier to get to one of those. Good luck! Link to comment Share on other sites More sharing options...
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