I had some shaking as well until I changed my coil, wires and plugs. Could also be in the front end like tie rods, ball joints, rims etc... If only under acceleration, I would check the ignition system first.
95 Contour GL. Bought new.
BAT Sway Bars/Pioneer CD/Koni Rear Struts/Mobil Fluids.
Looking for 15" alloy rims-PM me.
180,500km's so far.