Thanks for reply, its pointing to the sensor so i will give it a go, nothing else to lose , i have tried everything else i can think of, ie: electrical connections , fuses , plugs , new petrol , but still cant understand why other electrical things are happening like boot & sunroof opening , alarm going off etc , and car will run fine for days then suddenly cut out when i need it the most, final straw was last week when i got brought back home on back of 3 lettered breakdown recovery truck , mechanic insisted it was my electronic key, and recommended me someone he knew who would fix it on the cheap ( backhander or what) still i suppose it was worth the £75 i pay each year to get my pride & joy back to my home. Anyway i love my car even if it is sitting on my drive it still looks better than my neighbours car. many thanks Mick.