This is from Repairpals common problem page after putting in your vehicles info 2.3L V6 Supercharged
* Timing belt replacements can be very expensive on the supercharged models. It is important to be sure the timing belt is replaced at the scheduled interval.
* There are T-shaped vacuum connectors under the intake manifold that can break and cause a rough idle.
* The oil seals on the supercharger can fail and cause excessive oil consumption and bluish gray smoke from the tail pipe. Supercharger replacement can also be an expensive repair
Sounds like the T shaped vacuum connector is broken and needs replacement