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The "whining/groaning noise" could be an idler pulley bearing in the serpentine belt tensioner. That's one of the things that gets replaced in the big timing belt/ water pump/ serpentine belt service at 100k miles or so. Most likely, it will just make noise. Of course, it "could" be any of a number of more dire issues, which is what makes operation and maintenance of aging vehicles "entertaining". Just wait until your precious progeny start commuting around the country in all kinds of weather and you'll learn why anxiolytic drugs were invented. :scream:
 
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