Ok, this is hard to explain. My 98 Contour SVT kind of jolts when I hit the gas, and can be felt more when accelerating harder. Its like the car is misfiring (lets up and then starts accelerating hard all in a slit second. Also, when totally letting up on the gas, the car jolts as the rpms drop, very violently. Feels like your going over bumps. I read posts on bucking and "think" this is what I'm experiencing. I found two possible solutions. One is spark plugs and another is fuel pump. Tomarrow I'm going out to check the plugs. I hear autolite double platinums are the best for the 2.5L? If its not that, whats an estimate on how much a fuel pump will cost. Also how hard is it to do? Lastly, are there any other possibilities I should look into before going to the fuel pump? Thanks everyone.