My car has been running rough and the check engine light came on so i read it with my OBD2 and it came back a P300 (Random Misfire Detected). Any thoughts or suggestions on how to fix it? I've also been getting 17 MPG out of the car over the last 5-6 months so I don't know if these two problems go hand-in-hand together.
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How long has it been since youre car has a full tune up plugs/ wires / Fuel filter. Also you could have a coil pack needing replacing. Is youre car having a pause between idling? I would do the tune up first, Thats could correct youre misfire issue.
Good Luck.