If the car is running fine and giving you trouble when it's warm, I question a couple things. First, I would recomend that you check the EGR to make sure it is working properly and it's not plugged with carbon. If it's fine, look for a vacuum leak or an intake problem.
Let me know if this helps, or if you have any other questions.
Monday, November 3rd, 2008 AT 8:25 PM