My mechanic changed out the coil pack with a USED one, new plugs, and wires. Was o. k. for about 3 weeks then engine light came on and seemed to start losing power, only momentarily though. Next day light was off. I decided to change out the pack myself with a brand new one (Echo) and 2 weeks later the same thing happened. Put it on a scanner with another mechanic and he said "bad coil pack. " This is where I stand right now waiting for it to happen again. NAPA will go good for a new pack as soon as I bring the other one in. Is there a bulletin from Dodge for this type of problem?