i recently purchased a 2001 LR Disc II LE. IT has just started to bog down once it hits third gear. My first inclination is spark plugs, but after reading I think it might be the O2 Sensors. I live in a very hilly region and it starts to stutter if I floor it. Any help would be appreciated. Call me with any suggestions 479-409-5084. We are going on a trip tomorrow but i need to get it running right before I leave. Please feel free to call even though its thanksgiving.