Reving while sitting at lights etc
Has anyone had an experience with this? For the past 2 days, randomly, my truck has been sitting still (Stop sign, drive-thru, etc) and it will get a sudden surge in power. If you knock it up in neutral, I don't seem to get any abnormal issues. I have also noticed a odd sound that I can't pinpoint or describe when idling. None of my buddies noticed that idling sound. No codes are showing, and the only thing I know really odd with the truck lately other than this is the turbo not whistling nearly as loud as she used too. Ideas? Thanks in advanced. Always find good help on here.