hi guys thanks for all the reply's and help you wont believe this.
Eddie_r32 you are right it was battery how coincidental is that. car must have been topping battery up enough to keep it going then me sitting there trying to get obd to work flattened the battery. so have charged battery and car starts so least worry is off that car is ok. the battery is not the right one its tiny so have tried to get new one from euro parts but cant seem to find one with the small jap terminals so am looking to see if I can change the connectors.to uk ones has anyone done this.