My girlfriend and i bought our cars on the same day last year. I bought a 2005 eclipse gts and she bought a 200 firebird v6. Well her car now has 93,000 miles. It will kick while its idling or when your going slow and then accelerate, and especially on a hill. it didn't do it when she first bought it this started to happen about 5 months ago. well. she had her spark plugs changed. didnt fix it. i told her to start filling up with premium gas to clean it out a bit. that worked really good but it still did it just not as bad. No mechanics know whats wrong with it because the check engine light doesnt always come on. Its really frustrating because she can't afford for it to break down. anyone got a clue what it could be? If you need more details let me know. thanks