Thanks for the replies, I wanted to add that the thumping is not just on big bumps, but all the little ones too. The thumping is pretty rapid most of the time. The only time the car is quiet is when it is black top. Any other thoughts? If not then I'll just take it to the dealer and hope it's not big. THANKS!

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