my car is doing the same thing. one thing that i hear is after the car starts up a few minutes,later you hear a very very lite tick coming from the back by the firewall its one of the plug wires it is faulty but time runs out before i get a chance to find which one. the wires look fine but after they get hot things change. if you have a bad cyl not firing right when you read the plugs you should be able to notice the difference. i will post my findings later today if i find them because driving the tour is killing MY NEED FOR SPEED so i guess i will drive the stang today
