My mechanic was stumped as each time he did the diagnostics came up with different fault. He found a pipe that the clamp had come off when he removed the floor pan which he has now put two clamps. Following it that he found that the plastic valve on the EGR was faulty, Jaguar gave a six week delivery time and approx cost of 900 pounds he managed to get relatively new used one for 180 pounds so we are back on the road again just in time for our trip to Prague.