My 1.9dCi Laguna II shredded the aux drive belt recently. I've removed it and there's no damage to the surrounding area and the timing belt is fine. However, the engine won't start. There is currently no aux belt fitted, but as far as I know, this shouldn't affect the start (battery charged etc). The engine catches at first but sounds like the starter keeps going. Any ideas? I'm thinking fuel or airflow sensors, but I have no diagnostic gear to check.