My ford econoline 1997 e250 has intermittent misses at idle and acceleration cruising speeds

One of the coil packs are starting to go out. One way you can pin point it is to buy one coil pack and replace one. If it still misses keep moving the spare one to the next coil pack until you find it. If you take it somewhere to be fixed it will run about $275 for each coil pack and up from the dealer. If you do it yourself and some time cost will be $70 for a coil pack. I know cause I just went through the problem at 120,000 miles.

My 1997 ford e150 econoline conversion van 5.4liter with 100.000 miles has started tomiss andjump on me at around 30 miles an hour and feels as if it has lossed power, when i press the gas it used to take off and now when i press the gas when i am trying to pass it feels like it has to get up speed then it slowly starts to pick up the speed to pass.