BMW Repair: 1998 740il rough start and choke in closed loop wbagj832xwdm09287, o2 sensors, crazy car

Question
Hi Don, this car is driving me crazy. Car was sitting for about 3 months before I got it. I had to disconnect the icv in order to keep it running long enough to get home. Figuring this to be the problem I acquired a different one. Same problem followed a few days afterwards. The car cranks, starts, revs to find balance, and then dies. It does this until I rev to atleast 4k for about 30 seconds where it will either continue running or choke with a backfire. If it happens to continue running it will run till it reaches running temperature then choke. And it wont start back....sometimes for days. I ran a code and found tps and bank 3 and 4 o2 sensors.  I changed the tps,it ran good, and now its back to square one. I changed the spark plugs and it ran good for one day. If it starts on the first try(which is rare) it'll run till it reaches operating temp. Then it chokes and hesitates to restart.  Any help would be greatly appreciated .......THANKS IN ADVANCE

Answer
I think you need to check your fuel pressure.It sounds as if it is too high.(too much fuel pressure)Have you replaced the fuel filters?Although you haven't driven it they may have been contaminated while sitting.You do need to check to see what the pressure is.