Thanks Racemag, Umai Naa!! and Sunny. I didn't see your replies, until just now.

More info....
Has been an ongoing intermittent problem. Had been running perfectly but started spluttering about 6 months ago and didn't have the revs/power to get up a hill. Got towed to friends and next day, she started ok but I replaced the fuel filter as it still had the original one on.

All was good for 3 months with and did a lot of k's. Next time (just 20klms after installing a UHF radio) it was going up hill under load again and traffic on the Hwy. Scary. Came to a stop with it backfiring and spluttering etc. It had been raining heavy when this happened. Was in a precarious position on Hwy so put on hazard lights and abandoned for 10 mins whilst calling for help. Went back to van to collect some items and while there turned the key and off she went again. Perfect again!

Next time was only 1 week and 200klms later as I a was pulling into my driveway at home.Thought good fortune as breaking down in my home yard would be easier to fix etc. Turned the key hoping she wouldn't start, but she did immediately and drove perfectly again.

Two weeks later driving up Hwy, on way home she started to splutter /losing power/ on a flat stretch as I put my foot down a little bit. Knew there was a good pull over area a few klms ahead just before a small hill, so drove her gently. With the hill in sight, put my foot down and she died and just got into the rest area. She would not start (first time this had happened) and I got racq to tow to a sisters place nearby.

So I had replaced the fuel filter 6 months ago. This is what i did next.
Took my ECU out and put it into another persons T4 and it started his, so guessing that ECU is ok. (wouldn't run his for more than five secs, but guessing that due to different immobiliser)
Tried a second hand Throttle Body at a very confident friends suggestion! Didn't start, got a spare one now.
Tried a Fuel Pressure Regulator. No good, another spare
Tried Relay 30. Hadn't tried this earlier as the one in the van was the newer white one anyway. YES, she started, I was so relieved.
Thanked sister for her patience with her brown van spot lawn and headed off. Well, my jubilation was short lived, as about 2 klms away, started spluttering again, and died. Started her again and this time got about 300 mtrs. Now she wont start again and is parked on a busy, but safe road.
It wasn't always damp when she stopped, so I haven't tried the electronic coil replacement yet. May have to try, and if not successful add that to my spare parts collection. I realise I may eventually have to take her to a European specialist, but dont want to yet, as I would like to know her better as I intend traveling to some reasonably remote areas.
Have had to buy a new battery now, with all the starting.