2005 LR3 with only 47,000 miles. When driving at very low speeds, i.e. in bumper to bumper traffic or at a busy 4 way stop, it stalls, but starts right back up when you put it in park and turn the ignition. At first it only did this about once a month, now very frequently (i.e. just did it 3 times in a row in a busy parking lot). The only new warning is a "reduced engine performance' warning on start-up. The first few times it did this was when I was low on gas, i.e. below 1/4 tank, but now happening even right after filling the tank. Before it stalls, sometimes I can feel/hear a bit of 'thumping' and 'jumpiness'. It has not stalled while idling, just when moving very slowly... Any thoughts on what is causing this? I live on an island with no Land Rover dealership anywhere near... Thanks in Advance...