Don’t jump in and go out at full load.

Moin together, I have a Ford Transit Connect 1.8 tdci 90 Ps year of construction 2004. I have following problems. It only jumps with starterspree on u when you drive u gives gas bulging the preglallamp u three seconds later it goes out. I have a new starter, new glow plugs, new charge air cooler u a new nokken wave sensor installed. But unfortunately nothing has changed. Please help me further I am dependent on the car professional. I don’t know any more. MfG Timmi141. ..