Why does my van shake when you take off?

Your van may shake when you take off due to issues such as unbalanced wheels, worn-out tires, or problems with the suspension system. It could also be caused by a malfunctioning engine mount, which can lead to vibrations during acceleration. Additionally, drivetrain issues, like a failing CV joint or driveshaft, could contribute to the shaking. It's best to have a mechanic inspect your van to diagnose and fix the underlying problem.