Ford Taurus Engine Buck when in drive on 2002 Ford Taurus

When I put mt car into drive the engine will buck also when driving at slow speeds when climbing a hill.

Asked by for the 2002 Ford Taurus
Sounds as if you may have broken motor mounts. This can cause a lurch or bucking sensation.

If not, you may have a misfire intermittently or something of that nature. Look at the motor mounts first, however.
Put in new spark plugs if they have more than 50k on them.