I will be driving my Jeep a 1999 6 cylinder, when it will slow down all on its own. Most recently I was going about 35-40 getting ready to shift up when it slowed down all on its own. I pushed the gas pedal to the floor and got no where. I down shifted, speed up, than shifted up and it started going again. It has done this to me a few times. Once I was sitting at a red light and the jeep started jerking like it was going to stall out and the clutch was pushed the whole way to the floor, I even tried pumping the clutch 2 times and that got me know where. The light changed and when I shifted into first gear it moved. When I have been driving it has also just started doing the jerking/shaking (as though it is going to stall out) if i push down the gas pedal I get no where, but once again the down shifting/speeding up than shifting up gets the jeep going again.
So far i have tried nothing...any suggestions?