2003 Saturn L300 I have a Lw300

This car has just had all the spark plugs replaced and an ignition coil replaced to try and fix a cylinder misfire to no avail- the car only has a misfire in cylinder 3. I also cleaned the MAF sensor, and replaces fuel filter. The engine still misfires but I have to drive it for a while. I can feel it coming on (as in the problem might come soon) if I make hard accelerations my service light does not come on. This service light only comes on when it misfires and again I have to drive it a while before it misfires. The misfire is prevented however if I make the hard accelerations at this point. What could this be? Because when I first start driving its perfectly fine and the service light is not on.