So I've seen that shaking while accelerating is a fairly common problem for Grand Marquis, and that many people can fix it just with a general tune up. Since I don't have much money or knowledge of cars, I figured a general tune up of an older car would be a good place to start teaching myself. However, my budget is so tight that I will not be able to get all the necessary parts and perform a full tune up at the same time. What I need to know is in what order experienced mechanics and grand marquis owners think I should replace parts to do the most for my acceleration shaking.

Thanks for any help.