Hi, I have a similar problem.
I have just bought a Ford Mondeo TDCi 52 plate (2003) 130bhp. It was an ex-taxi so I got it for just £900. At the time of sale I was made aware of the cutting out problem, and advised that a mechanic reckoned that the EGR valve needed replacing.
After trawling through endless forums, I decided to replace the Camshaft Sensor (my car had the old black one, replaced it with new grey one from Motor Parts Direct). I then decided to blank the EGR valve - I was getting lots of black smoke from low revs - rather than replace it, I had it cleaned then blanked it.
Blanking the EGR has done wonders to the performance, plus I only get smoke on start up, and when near the red line in 3rd. So that's one problem sorted.
On the test drive after blanking the EGR, the car cut out again at 65mph in 5th gear. What am I missing that needs replacing and checking?
As for the glow plugs, one of them is currently snapped, so they haven't been changed in a while. It's difficult to start the car, but drives fine once you've revved enough to get all the pistons going.
Is the car dying on me an injector issue?