Hi all. I need some help. I have a 91 240. After car warms up my car will die. I have had it die while idle, while accelerating, or while putting in gear after parked.

I have replaced fuel pump(external), fuel filter, in tank pump, strainer, fuel pressure regulator, and fuel relay.

What am I missing? I am losing sleep over this. Please any help?

 

Update. So after driving around for a bit pulled over left car in drive with foot in brake. Less than two mins later, car died.