My 99 2500 thats in my sig, that I just bought no less did something funny today. It hasnt been started or moved all week and when I went out a little while ago to back it out of the drive way and turn it around so i could back it into the garage I noticed it didnt have any power. If I put it into park and and gave it throttle it acted normal but in gear it was like it was hitting a limiter of some sorts. Is this a fuel pump or injector pump issue starting to raise its head???