I have an i30 CRDI with an intermittent fault. It will on occasion lose all power while driving, and idle steadily at approx 1500 rpm. Playing with the accelerator does not alter the status, but it has thus far resolved itself after a few minutes. Occasionally it will kick in and out of this condition over a few kilometres, making the car perform in a jerking manner. No warning lights illuminate during any of these episodes. I have taken it to the dealership, and they have connected it to the computer, but it does not show any outstanding fault. Of course, when they took it on a long test run, it behaved impeccably! Has anyone else perhaps experiences this, or can anyone offer any suggestions as to how I might get to the bottom of this?