94 Peugeot 306XSI 2.0Ltr Petrol Engine Dying?

i have a 94 Peugeot 306XSI 2.0Ltr Petrol

i have a problem maybe you could help

it seems that when i use my car from cold first time for the day it works fine and get up to temperature, all good,
but let it get stone cold again and use it and it will die every time you stop for the next 20 or 30min.


can you help