ANAYV 6/14/2010Sounds like a misfire
Sure the spark plug wires are new,and connected good?
....maybe bad fuel injector....?
Jeanie 6/14/2010My car was doing that and they changed the fuel sensor and a new air filter and solved the problem
HouseCallAuto 6/14/2010Hook up a code reader to the diagnostic connector under the dashboard on the driver side. This is the way vehicles are diagnosed. The codes will lead to the repair necessary. The cost of the tool is not that much considering that a shop will bill you a similar amount PLUS parts and labor to fix the problem. There are instructions that come with it and it is easy to do. After you read the code or codes, write them down and repost with the codes and we can tell you what parts to buy to DIY if you are up to it. http://www.autopartswarehouse.com/.../E203030.html