2003 Mondeo 2.0 TDCI
Fuel tank 3/4 full
80K miles on the clock
Normally runs like a sweetie, and has done for the last 4 years
Driving to work this morning (was cold, but it's been like that for a while) 55mins into a 60 min journey, on the motorway doing 50mph, and the car starts to loose power for half a second. Just imagine what it would be like if you were running out of petrol, but a half second later the engine goes back to normal. The engine doesn't turn off, just looses drive and the revs dip momentarily.
This happens 3 or 4 times for a min or two and then the engine just turns itself completely off. Lights still on, radio still on, but it's like one min you are driving along and the next you turn of the engine (except you haven't).
Coast to the hard shoulder. Wait a couple of mins. Turn the engine back on and everything seems fine.
Take it straight to my local garage (small, cheap, friendly, independent - you know the type) and after a couple of hours, they can't find anything wrong.
On the way back home this evening, again after about 50 mins it starts all over again.
WTF is wrong?!!!
Please help, I can't afford a new car!