I am new to the site and this is my first technical post. My wife and I purchased this 2005 Jag X-Type 3.0 in sept. 2011. After some time the engine light came on accompanied by a very intermittent surging problem on hard throttle from slower speeds. Taking off from a stoplight and mashing the gas will get her "bucking" like she has a Burr under her saddle! Ease into the throttle and she glides along smooth as silk. I am searching past posts for similar problems to get an idea of which direction to go with this. Any informed replies will be greatly appreciated!