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Well, that is a possibility. It doesn't explain why the heat will not work until turned up to 90+ degrees. It will not control the temp. on heat also.
Yes, it has auto or can be used in manual. Problem is the same in ether position.
Correct, also if I move it one notch off of 90 it will go to as cold possible until it freezes off.
Pete, I think you hit it right on the money, I was thinking the exact same thing was wrong but could not convince the dealer service dept. I just did not know were the sensor was located but you answered that. I am sure you are right and will change the sensor out as soon as I can. Working on a Ford Model A NW Regional Meet right now. It appears to me that the Ambient Outside sensor would be the same type as the in-vehicle sensor.
Thanks for your help - and I am satisfied with your answer.