I have a 1998 GTP with about 129,000 miles and for the past few months when I am at a standstill it makes a sputtering sound from the exhaust and there's a 1-2 second delay from when I hit the gas and the time that the car actually moves. The stealership told me that they couldn't find anything wrong with it. It does have an SES light on, but from what I understand that's just an emissions code and my mechanic told me that it doesn't affect the driveability of the car at all (I forget the actual code number). I had the supercharger replaced a few months ago and that is when this all started. The supercharger was out of 1997 regal GS. The spark plugs look a little worn but nothing too bad at all. The spark plug wires were also replaced about 50,000 miles ago (last spark plug change). However, I believe that all 3 ignition coils are the originals. Any help is greatly appreciated!
