I recently got myself a 1989 740 GLE 16 valve sedan (LH2.4). According to the previous owner, it had a fuel delivery problem, it wouldn't start. So the first couple of things I checked was of course the fuel pumps, and relay. I swapped out the relay, and put it in my other 740, and that car fired right up, and still runs with that relay 2 weeks later. So then I checked the pumps, and with direct 12 volts to them, they run fine. I also checked the radio suppression relay, I did the same thing as with the fuel pump relay, swapped it with the one in my other 740, and it was fine. I also pulled the harness off the AMM, to see if it would go into limp home mode, but no difference. The only way that I have been able to start it is by jumping the feed from te fuel pump relay that is supposed to feed power to the fuel pumps (pink wire #87/2 on the relay), and plugging that wire into a 12 volt source, then the pumps run, and when I turn the key it fires for a second, and then dies right away. All the fuses are good, all grounds that I have checked are good, I have good spark, it just wont run. What could it be that I am missing?? Any leads or input would be greatly appreciated, thanks!!!