I have a 1994 with a 3.8 L engine. I started fine the other day and the next it won't. The engine will rotate and try to start but it won't . I have replaced the fuel relay module, checked spark plugs, fuel pump turns on and the inertia switch has been checked. I can spray ether and it will run but dies as soon as i stop spraying . I've been an autobody tech for 16 yrs and have mechanic just as much. The car has fire to plugs and the fuel rail seems to have pressure. Can anyone help??!! Need to get this car running NOW!!!