Hello, I went to the dealership today and $145 later I had a thump-free car. I was a "rubber buffe". I don't know what this is, but I think it is basically a rubber bushing. $45 for the part, $100 for the labor. Hope this helps,

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Scott Chaffin
190E 2.3 8V
http://www.geocities.com/scotty-c_2000/
slchaffin@ou.edu