I am looking for possible causes, and solutions to the following issue; My 2011 Ford Focus (Auto trans) is making an odd scrapping mixed with a squeaking noise. It only happens at idle, when in park you can hear this noise faintly, it gets louder when shifting into reverse, neutral, drive, etc. This noise started a few days ago. I am in Wisconsin so it is cold, if perhaps ambient temperatures have a factor in this. Things I have checked; the serpentine belt and pulleys, nothing wrong there. So I am stumped.
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