104k miles, yes wife just drives back and forth to work and around town. And im in dallasfw area 10 or more days strait over 100. Im thinking your right maybe plugs and filter first. When i went to the dealership to get the code read for steering angle sensor they also did a very good workup on the car. The boot repair was $1300 alone and that was not replacing the whole shafts. Think the steering angle sensor was over $600 so im pretty sure this would break the bank.
Ill have to search around to see what plugs are being used. Found bosch and NKG from $6 to $8. Fuel filter $65, Fuel injector $90 a piece, yikes, unless i gambled again with remanufactured, i didnt know they even did that. Coils $106 but beck/arney $52 online. I can just imagine with the parts alone would be at the dealership...