My son's 440 diesel (1995) makes an awful screeching sound when it is started in the morning. It cut out completely yesterday, but re-started ok with some more diesel even though the gauge was well into the black. Is this noise the symptom of a duff fuel pump? I would have thought at least the pump would be driven off a toothed belt.
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The screeching is probably due to the alternator drive belt slipping. It is more heavily loaded following a cold engine start as it is trying to recharge the partially drained battery.
Check the belt tension and inspect for shinny/glased friction surface.
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