Hi, all.
I've just been reading this thread, and I have exactly the same problem with my 1996 300Tdi auto Disco. I haven't noticed the temperature going up, but I have had exactly the same symptoms on hills, especially long or steep ones. Is there much difference between the genuine fuel lift pumps and the cheap ones. I don't mind spending the money, but only if it's worth it. Is the Delphi pump a mid-ranger? Doesn't seem cheapest, or most expensive.
Cheers,
Chris.