I have a 2000 V6 mustang
which i bought back in April. The only Mod I've done to it is a CAI, the rest is pretty much all Original. Within a few weeks of driving it around I noticed around 40-45 mph the engine hesitates and the gas pedal kindof shakes. At first it wasn't all too bad but as of recently it does it almost every time i hit 40-45 mph. Sometimes if I lay on the gas a bit it'd be fine and wouldn't hesitate. At around 50-55 mph its fine again! What could be wrong, i really want to figure this out. Anyone else have this problem?