I am having some trouble with my 93 Corrado VR6. The car will start without issue but dies after a few minuets. It will start right back up again but dies again in a few minutes. I have put a fuel pressure gauge on the system and found that the fuel pressure is good at start up but then drops to 0. Putting a meter on the fuel pump leads shows that there is voltage when the key is in the crank position but no voltage in any other position. I have replaced the fuel pump relay. I am wondering if this could this be an ignition switch issue or am I dealing with ECU problems?
Thanks for your help