I've got a problem with my 2005 freelander v6 hse. I had an engine light issue and that resulted in coil packs 1 and 6 being replaced and a new set of plugs installed. She ran beautifully until this afternoon, first the oil light kept flickering on and off then the whole vehicle started juddering and the engine ran really rough until it eventually died a couple of hours ago. From looking through various forums it seems that the fuel pump may be the culprit. Are they easy to replace and where would it be located?