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Dragonwind · 04-01-2011, 09:23 AM

There seems to be two causes of this. The front motor mount and the Dual Mass Flywheel. I just changed my DMF and that solved the 3000rpm vibration. Start with the front motor mount then move to the DMF next.

If you end up changing the DMF then do the IMS bearing at the same time...shared labor...assuming it is a 986 and not a 987.

Chris

EDIT: Oops I see in your sig that it is a 97 with over 70k in mileage. Chances are high you need it all; front motor mount, DMF, clutch, IMS....might as well change the AOS while you're there.

04-01-2011, 09:23 AM	#8
Dragonwind Registered User Join Date: Jun 2007 Location: Colchester, CT Posts: 489	There seems to be two causes of this. The front motor mount and the Dual Mass Flywheel. I just changed my DMF and that solved the 3000rpm vibration. Start with the front motor mount then move to the DMF next. If you end up changing the DMF then do the IMS bearing at the same time...shared labor...assuming it is a 986 and not a 987. Chris EDIT: Oops I see in your sig that it is a 97 with over 70k in mileage. Chances are high you need it all; front motor mount, DMF, clutch, IMS....might as well change the AOS while you're there. __________________ 1999 986 2.5L, Stock Exhaust (S muffler), EVO Intake, 18" Stock rims (17" during winter), IMS Upgrade, 150k+ miles and counting! 87 944S brought back to life Last edited by Dragonwind; 04-01-2011 at 09:25 AM.