I have a '96 Automatic, and recently, there's been very obvious and annoying hesitation when cruising on a flat road, or down a hill. The jerkiness almost feels like the sensation you get when you release the gas on a stick shift. It goes away as soon as I give it more gas, or it downshifts, but comes back as soon as I'm back to comfortably cruising. The guys at a shop I brought it to can't figure it out and said that they thought it was in need of a tune-up, but I've already replaced the stock filters (save for fuel filter) and the plugs. Any ideas as to what is causing this (the car's transmission was already replaced at 25K miles)? I am open to anything.
