Harmonic 8.1
Jul 15, 2012 | 08:25 PM
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Harmonic 8.1
I get a harmonic sound coming from my 2003 8.1 when it is under a load. It is most noticeable from 2200~3000 RPM. It varies in frequency starting off slow then increasing until it is almost not there, then it slows down again. The RPM's may not change the entire time during this cycle. Can anyone explain?
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