Im not really sure wahts wrong with the car. actually its a van, I know i didnt wan to admit it earlier. its a 98 dodge caravan but the mechanic just said something was wrong with the # cylinder that it wasnt working properly. about the shaking i have already had it alligned and the tires re-balanced and rotated. I have not gotten the emmisions done yet but i was just wondering if itcould cause the emmisions to fail due to the cylinder not working properly..

again thaks alot guys..