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Old 11-13-2015, 12:21 PM   #13
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Join Date: Sep 2015
Location: St. Petersburg, Florida
Posts: 270
Originally Posted by Gilles View Post
Could that be a loose exhaust mounting bracket...?
It's a pretty substantial vibration, and can be felt through the wheel and seats. I don't detect any mechanical-type noises associated with it. Also, the engine RPM doesn't change as the vibration cycles on and off, so I've ruled out a hunting idle issue.
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1978 Porsche 911SC Euro Non-Sunroof - Grand Prix White
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