hi i have a 2000 v6 mustang . has ruff idle and when you drive at a steady speed like 40 or so car bucks. i put in new plugs wires air filter coil pack cleaned thorel body and put in cleaner in the gas tank and still the same any one have any answer please help. its automatic, also checked for vacum leaks . could injectors case this or o2 sencors.
