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Old 01-08-2018, 10:00 AM   #19
Mark114

 
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Drives: 2016 2SS Convertible
Join Date: May 2012
Location: St. Louis, MO
Posts: 1,780
Agreed that it is time to take it to the dealer. Fluctuating RPM is another symptom of a bad torque converter. They can monitor the TC while driving to verify that it is malfunctioning.
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