Td Travel Insurance Pre Existing Medical In The Past 2 Months My Peugeot 306 TD Has Died On Me Twice - Are There Any Common Faults?

In the past 2 months my Peugeot 306 TD has died on me twice - are there any common faults? - td travel insurance pre existing medical

After a journey by 30-40 km / h, then slowed down to the next intersection, where the coaches, the engine dies. After restarting once or twice - that gets up and goes away. What could be the potential problem?