little bucking problem

[1998contourgl]

98 csvt. All new tune up parts. When I'm in 4th or 5th gear the car slightly bucks/shudders. Guy I got it from supposedly had clutch done 2 years ago and it doesn't feel like a clutch issue. No check engine light on either. Any input would be appreciated. Thanks all

 

[ScotSHO]

Ignition - buck under load is typically spark plugs, wires or coil pack. Try plugs and wires first.

 

[Quicksight]

COuld be motor mounts. If it shutters up hill the motor mounts may need replaced?

 

[1998contourgl]

The bucking is slight. Not much