I have been having the same problem for about 2 months now. It comes and goes. This past week, until this morning, it has been with me the whole time. I think I may have picked up some bad gas (water in it or perhaps lower than 93 octane). When I go to an Amoco 12 miles away that is fairly new and add some STP Water Treatment, the problem disappears. But when it happens, it is most pronounced in first and second.
Paul
