850 starts fine but tries to cuts off repeatedtly or simply dies only when first started. Not idling but moving. After engine is warm it runs normal. I feels like the electric power is cut off but it could be gas cutoff. engine is not missing at all before or after the evebt. If i park it for a long time it will do it again. It all ways restarts, sometimes it may take a few minutes. I have swapped computers from a second 850 I own, swaped coil unit,cleaned battery and alternator connectors,changed coil wire,cleaned fuses. Running out of ideas. i drive it on the highway once warm with no problems whatsoever.