The belt tensioner on the 2.3 model is self tensioning,,,,,,,,I have just changed the belt on my gal last weekend,,,,,,,,, get your gal on ramps, axle stands, or better a pit,,,,remove the undertray with a 14mm spanner, find the tensioner pulley apply the spanner to the nut and turn the tensioner clockwise, while applying the clockwise motion, remove the belt now postion the new belt on the pulleys and release the tensioner, and remove the spanner and refit the undertray this took me 30mins with the gal over a pit at work :rolleyes: