Rough idle and vibration at 2000 rpm

I have a 91 GT with an aod and recently it has developed a bit of a rough idle and a pretty severe vibration at around 2000 rpm. The vibration pretty much goes away above 2200 rpm. This occurs whether I'm going down the road or when stopped in park or neutral. Anyone else ever come across something similar? Thanks for any help in advance.

Reply to
91GTHatch
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"91GTHatch" wrote in news:1126576890.806825.175390 @g49g2000cwa.googlegroups.com:

I would check PRETTY CLOSELY around the front of the Crankshaft. Bad Damper?

Reply to
Backyard Mechanic

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