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As jwh20 stated in comments, the ambient air temp sensor is for the outside and has absolutely nothing to do with the engine coolant. From your description, you've not indicated anything which shows the vehicle is overheating. Your description leads me to believe you are worrying about something which doesn't exist. The vehicle is most likely running as ...


I don't know, but I always just assumed it has something to do with air volume going through the vents. The basic three are Defrost, Feet, and Face. Feet is usually a tube with only two vents. So, adding Feet to either Face or Defrost doesn't affect the volume and speed of air coming from the vents. However, Face usually has 4 or 6 vents. And Defrost is ...

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