alrite paul thanks but as mentioned the van ran perfect for couple weeks multiple stops and starts and never had problem.... but no didn't do no relearn as most functions require engine to run to do them... ive now swapped fuel rail and checked numerous things but with no fault codes its like hitting a wall everytime....I,m wondering if chain has jumped or pump is knackered.. I did check with the testers to see if injector pulsing on turnover and they wer'nt but one of lads said it wouldn't due to fuel pressure or something. think scrapping it is on the cards