Long story short, it started with the alternator, alternator wasn't working, got it checked, was pushing 16V all three tests, so i replaced the ECU, idle in park was smooth, drove smooth, but idle in gear was really bad, multiple cylinders missing, so i replaced the dist cap, ( ignition coil line was dust on the dist. cap), replaced all the lines and plugs, idles with a miss in park, when i press the gas it hesitates and sounds horrible (in park), when i put it in gear it sounds and feels like multiples misfires, im now stuck on what to do