I have a 99 camaro with the 3.8 v6 in it, and when i put it in gear, (automatic transmission) it will move for a short distance and then stall. I was told by a friend to check codes and it threw a random misfire code. I have replaced the ignition coil packs, plug wires, and plugs. Wires and coil packs are msd. But i dont think its ignition related, what are yalls thoughts on it?

 

test your fuel pressure