[neil30076]

John, re-check the wiring on the plug going into the afm, I just helped a friend trouble shoot a later 928, the wiring in the harness close to the plug was fused together and causing the car to start then die. With the afm pulled out but plugged in it would run until i twisted the afm around, and then it shorted out and died. I cut the cable end off upstream of the short and it started and ran , albeit badly.

Just a thought....