I took my disco tdi (95) for a 2 minute journey and it started making a sound that i think was coming from the fanbelt area (could be wrong). I was a loud rattling type sound with some screeches!! . It didnt appear to have an adverse affect on the driving at that time. When i went to start an hour later the glow plug illumination was missing from the dash and nothing at all was happening when i turned the key. Any Ideas???