Pajero 2.8TD, cold engine always goes off

Hello, I drive a Mitsubishi Pajero 2.8 TD automatic built in 1998. The good guy has 195,000 km behind him and makes difficulties. The engine starts without problems at the cold start, but starts after a short distance and doesn’t want to start again. After several attempts he starts again. This happens again and again until the engine is warm. Does anyone know the problem and know what it is? Was already in two workshops and had various repairs carried out. Unfortunately v because no one has found the cause… Greetings suckler cow PS.: Even if I’m called suckler cow, I’m not a woman and it’s not an operator error ;-))