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Welcome, I'm Chris (aka Moose).
The diagnostics for this end with the temp sensor or the climate control to blame. Since youh ave already replaced the climate control that would leave the sensor to blame. Would you like the Ford diag steps for this concern to work over prior to purchasing more parts?
Now that I have posted a partial or complete answer, you will see you can rate me. The deposit you have already paid is not transferred to me until you rate me. I would like to receive nothing less than 5 star excellent ratings. So if we are not there yet, please reply and let me help more. If you're not pleased, let me know because rating bad does not result in a refund, there are better options. Rating now will not close this post nor prevent replying. Thanks Chris
Here are the diagnostic steps. https://www.dropbox.com/s/uo0f1v8pwi550ba/ambient.pdf?dl=0
Keep in touch as needed
ODD, please do keep in touch on the outcome.