perezc6457

Ok ima explain this the best way i can and hopefully someone else has experienced this same problem and can help. I have a 2001 Ford Mustang GT 5 Speed. While taking off or shifting gears my car acts like its trying to stall or acts like i got it in to high of a gear which i know i dont. Then when i get to cruzing speeds it will kind of sputter or vibrate like i have a spark plug out. But if im at a stand still in neutral or after it stops sputtering or vibrating during shift change or cruzing it runs like normal. anybody got any suggestions?