Got a 2002 Ford Ranger V-6 standard shift. upon acceleration it has a miss and a miss through all the gears, even misses in over drive. I have replaced the spark plugs, new plug wires, new mass air flow sensor cleaned egr valve replaced both upper oxygen sensors. What's Next?:

 

coil pack, just had to put one in my 03 Edge with similar symptoms.

 

ask your local mechanic about the intake valve sticking open or sticking shut! Thats what they said makes mine miss and jerk at the beginning of each gear change after pushing down on pedal it quits.